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More refactoring ahead of footer & meta changes (#9240)

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Summary:
I'm working on a new format_version=6 to support context
checksum (https://github.com/facebook/rocksdb/issues/9058) and this includes much of the refactoring and test
updates to support that change.

Test coverage data and manual inspection agree on dead code in
block_based_table_reader.cc (removed).

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9240

Test Plan:
tests enhanced to cover more cases etc.

Extreme case performance testing indicates small % regression in fillseq (w/ compaction), though CPU profile etc. doesn't suggest any explanation. There is enhanced correctness checking in Footer::DecodeFrom, but this should be negligible.

TEST_TMPDIR=/dev/shm/ ./db_bench -benchmarks=fillseq -memtablerep=vector -allow_concurrent_memtable_write=false -num=30000000 -checksum_type=1 --disable_wal={false,true}

(Each is ops/s averaged over 50 runs, run simultaneously with competing configuration for load fairness)
Before w/ wal: 454512
After w/ wal: 444820 (-2.1%)
Before w/o wal: 1004560
After w/o wal: 998897 (-0.6%)

Since this doesn't modify WAL code, one would expect real effects to be larger in w/o wal case.

This regression will be corrected in a follow-up PR.

Reviewed By: ajkr

Differential Revision: D32813769

Pulled By: pdillinger

fbshipit-source-id: 444a244eabf3825cd329b7d1b150cddce320862f
This commit is contained in:
Peter Dillinger 2021-12-10 08:12:09 -08:00 committed by Facebook GitHub Bot
parent f57745814f
commit 653c392e47
32 changed files with 449 additions and 354 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
db/column_family_test.cc
View file

@ -554,7 +554,7 @@ class ColumnFamilyTest
INSTANTIATE_TEST_CASE_P(FormatDef, ColumnFamilyTest, INSTANTIATE_TEST_CASE_P(FormatDef, ColumnFamilyTest,
testing::Values(test::kDefaultFormatVersion)); testing::Values(test::kDefaultFormatVersion));
INSTANTIATE_TEST_CASE_P(FormatLatest, ColumnFamilyTest, INSTANTIATE_TEST_CASE_P(FormatLatest, ColumnFamilyTest,
testing::Values(test::kLatestFormatVersion)); testing::Values(kLatestFormatVersion));
TEST_P(ColumnFamilyTest, DontReuseColumnFamilyID) { TEST_P(ColumnFamilyTest, DontReuseColumnFamilyID) {
for (int iter = 0; iter < 3; ++iter) { for (int iter = 0; iter < 3; ++iter) {
@ -746,8 +746,8 @@ INSTANTIATE_TEST_CASE_P(
std::make_tuple(test::kDefaultFormatVersion, false))); std::make_tuple(test::kDefaultFormatVersion, false)));
INSTANTIATE_TEST_CASE_P( INSTANTIATE_TEST_CASE_P(
FormatLatest, FlushEmptyCFTestWithParam, FormatLatest, FlushEmptyCFTestWithParam,
testing::Values(std::make_tuple(test::kLatestFormatVersion, true), testing::Values(std::make_tuple(kLatestFormatVersion, true),
std::make_tuple(test::kLatestFormatVersion, false))); std::make_tuple(kLatestFormatVersion, false)));
TEST_P(ColumnFamilyTest, AddDrop) { TEST_P(ColumnFamilyTest, AddDrop) {
Open(); Open();

2
db/comparator_db_test.cc
View file

@ -317,7 +317,7 @@ class ComparatorDBTest
INSTANTIATE_TEST_CASE_P(FormatDef, ComparatorDBTest, INSTANTIATE_TEST_CASE_P(FormatDef, ComparatorDBTest,
testing::Values(test::kDefaultFormatVersion)); testing::Values(test::kDefaultFormatVersion));
INSTANTIATE_TEST_CASE_P(FormatLatest, ComparatorDBTest, INSTANTIATE_TEST_CASE_P(FormatLatest, ComparatorDBTest,
testing::Values(test::kLatestFormatVersion)); testing::Values(kLatestFormatVersion));
TEST_P(ComparatorDBTest, Bytewise) { TEST_P(ComparatorDBTest, Bytewise) {
for (int rand_seed = 301; rand_seed < 306; rand_seed++) { for (int rand_seed = 301; rand_seed < 306; rand_seed++) {

2
db/corruption_test.cc
View file

@ -546,7 +546,7 @@ TEST_F(CorruptionTest, RangeDeletionCorrupted) {
BlockHandle range_del_handle; BlockHandle range_del_handle;
ASSERT_OK(FindMetaBlockInFile( ASSERT_OK(FindMetaBlockInFile(
file_reader.get(), file_size, kBlockBasedTableMagicNumber, file_reader.get(), file_size, kBlockBasedTableMagicNumber,
ImmutableOptions(options_), kRangeDelBlock, &range_del_handle)); ImmutableOptions(options_), kRangeDelBlockName, &range_del_handle));
ASSERT_OK(TryReopen()); ASSERT_OK(TryReopen());
ASSERT_OK(test::CorruptFile(env_, filename, ASSERT_OK(test::CorruptFile(env_, filename,

10
db/db_basic_test.cc
View file

@ -15,6 +15,7 @@
#include "rocksdb/flush_block_policy.h" #include "rocksdb/flush_block_policy.h"
#include "rocksdb/merge_operator.h" #include "rocksdb/merge_operator.h"
#include "rocksdb/perf_context.h" #include "rocksdb/perf_context.h"
#include "rocksdb/table.h"
#include "rocksdb/utilities/debug.h" #include "rocksdb/utilities/debug.h"
#include "table/block_based/block_based_table_reader.h" #include "table/block_based/block_based_table_reader.h"
#include "table/block_based/block_builder.h" #include "table/block_based/block_builder.h"
@ -972,8 +973,15 @@ TEST_F(DBBasicTest, MultiGetEmpty) {
} while (ChangeCompactOptions()); } while (ChangeCompactOptions());
} }
TEST_F(DBBasicTest, ChecksumTest) { class DBBlockChecksumTest : public DBBasicTest,
public testing::WithParamInterface<uint32_t> {};
INSTANTIATE_TEST_CASE_P(FormatVersions, DBBlockChecksumTest,
testing::ValuesIn(test::kFooterFormatVersionsToTest));
TEST_P(DBBlockChecksumTest, BlockChecksumTest) {
BlockBasedTableOptions table_options; BlockBasedTableOptions table_options;
table_options.format_version = GetParam();
Options options = CurrentOptions(); Options options = CurrentOptions();
const int kNumPerFile = 2; const int kNumPerFile = 2;

1
db/db_block_cache_test.cc
View file

@ -15,6 +15,7 @@
#include "db/column_family.h" #include "db/column_family.h"
#include "db/db_test_util.h" #include "db/db_test_util.h"
#include "port/stack_trace.h" #include "port/stack_trace.h"
#include "rocksdb/persistent_cache.h"
#include "rocksdb/statistics.h" #include "rocksdb/statistics.h"
#include "rocksdb/table.h" #include "rocksdb/table.h"
#include "util/compression.h" #include "util/compression.h"

7
db/db_bloom_filter_test.cc
View file

@ -551,10 +551,9 @@ INSTANTIATE_TEST_CASE_P(
INSTANTIATE_TEST_CASE_P( INSTANTIATE_TEST_CASE_P(
FormatLatest, DBBloomFilterTestWithParam, FormatLatest, DBBloomFilterTestWithParam,
::testing::Values( ::testing::Values(
std::make_tuple(BFP::kDeprecatedBlock, false, std::make_tuple(BFP::kDeprecatedBlock, false, kLatestFormatVersion),
test::kLatestFormatVersion), std::make_tuple(BFP::kAutoBloom, true, kLatestFormatVersion),
std::make_tuple(BFP::kAutoBloom, true, test::kLatestFormatVersion), std::make_tuple(BFP::kAutoBloom, false, kLatestFormatVersion)));
std::make_tuple(BFP::kAutoBloom, false, test::kLatestFormatVersion)));
#endif // !defined(ROCKSDB_VALGRIND_RUN) || defined(ROCKSDB_FULL_VALGRIND_RUN) #endif // !defined(ROCKSDB_VALGRIND_RUN) || defined(ROCKSDB_FULL_VALGRIND_RUN)
TEST_F(DBBloomFilterTest, BloomFilterRate) { TEST_F(DBBloomFilterTest, BloomFilterRate) {

6
db/db_test_util.cc
View file

@ -15,6 +15,7 @@
#include "rocksdb/env_encryption.h" #include "rocksdb/env_encryption.h"
#include "rocksdb/unique_id.h" #include "rocksdb/unique_id.h"
#include "rocksdb/utilities/object_registry.h" #include "rocksdb/utilities/object_registry.h"
#include "table/format.h"
#include "util/random.h" #include "util/random.h"
namespace ROCKSDB_NAMESPACE { namespace ROCKSDB_NAMESPACE {
@ -516,6 +517,11 @@ Options DBTestBase::GetOptions(
table_options.index_block_restart_interval = 8; table_options.index_block_restart_interval = 8;
break; break;
} }
case kBlockBasedTableWithLatestFormat: {
// In case different from default
table_options.format_version = kLatestFormatVersion;
break;
}
case kOptimizeFiltersForHits: { case kOptimizeFiltersForHits: {
options.optimize_filters_for_hits = true; options.optimize_filters_for_hits = true;
set_block_based_table_factory = true; set_block_based_table_factory = true;

1
db/db_test_util.h
View file

@ -867,6 +867,7 @@ class DBTestBase : public testing::Test {
kBlockBasedTableWithIndexRestartInterval, kBlockBasedTableWithIndexRestartInterval,
kBlockBasedTableWithPartitionedIndex, kBlockBasedTableWithPartitionedIndex,
kBlockBasedTableWithPartitionedIndexFormat4, kBlockBasedTableWithPartitionedIndexFormat4,
kBlockBasedTableWithLatestFormat,
kPartitionedFilterWithNewTableReaderForCompactions, kPartitionedFilterWithNewTableReaderForCompactions,
kUniversalSubcompactions, kUniversalSubcompactions,
kUnorderedWrite, kUnorderedWrite,

60
db/external_sst_file_test.cc
View file

@ -41,16 +41,33 @@ class ExternalSSTTestEnv : public EnvWrapper {
bool fail_link_; bool fail_link_;
}; };
class ExternalSSTFileTestBase : public DBTestBase {
public:
ExternalSSTFileTestBase()
: DBTestBase("external_sst_file_test", /*env_do_fsync=*/true) {
sst_files_dir_ = dbname_ + "/sst_files/";
DestroyAndRecreateExternalSSTFilesDir();
}
void DestroyAndRecreateExternalSSTFilesDir() {
ASSERT_OK(DestroyDir(env_, sst_files_dir_));
ASSERT_OK(env_->CreateDir(sst_files_dir_));
}
~ExternalSSTFileTestBase() override {
DestroyDir(env_, sst_files_dir_).PermitUncheckedError();
}
protected:
std::string sst_files_dir_;
};
class ExternSSTFileLinkFailFallbackTest class ExternSSTFileLinkFailFallbackTest
: public DBTestBase, : public ExternalSSTFileTestBase,
public ::testing::WithParamInterface<std::tuple<bool, bool>> { public ::testing::WithParamInterface<std::tuple<bool, bool>> {
public: public:
ExternSSTFileLinkFailFallbackTest() ExternSSTFileLinkFailFallbackTest()
: DBTestBase("external_sst_file_test", /*env_do_fsync=*/true), : test_env_(new ExternalSSTTestEnv(env_, true)) {
test_env_(new ExternalSSTTestEnv(env_, true)) {
sst_files_dir_ = dbname_ + "/sst_files/";
EXPECT_EQ(DestroyDir(env_, sst_files_dir_), Status::OK());
EXPECT_EQ(env_->CreateDir(sst_files_dir_), Status::OK());
options_ = CurrentOptions(); options_ = CurrentOptions();
options_.disable_auto_compactions = true; options_.disable_auto_compactions = true;
options_.env = test_env_; options_.env = test_env_;
@ -65,25 +82,15 @@ class ExternSSTFileLinkFailFallbackTest
} }
protected: protected:
std::string sst_files_dir_;
Options options_; Options options_;
ExternalSSTTestEnv* test_env_; ExternalSSTTestEnv* test_env_;
}; };
class ExternalSSTFileTest class ExternalSSTFileTest
: public DBTestBase, : public ExternalSSTFileTestBase,
public ::testing::WithParamInterface<std::tuple<bool, bool>> { public ::testing::WithParamInterface<std::tuple<bool, bool>> {
public: public:
ExternalSSTFileTest() ExternalSSTFileTest() {}
: DBTestBase("external_sst_file_test", /*env_do_fsync=*/true) {
sst_files_dir_ = dbname_ + "/sst_files/";
DestroyAndRecreateExternalSSTFilesDir();
}
void DestroyAndRecreateExternalSSTFilesDir() {
ASSERT_OK(DestroyDir(env_, sst_files_dir_));
ASSERT_OK(env_->CreateDir(sst_files_dir_));
}
Status GenerateOneExternalFile( Status GenerateOneExternalFile(
const Options& options, ColumnFamilyHandle* cfh, const Options& options, ColumnFamilyHandle* cfh,
@ -282,13 +289,8 @@ class ExternalSSTFileTest
return db_->IngestExternalFile(files, opts); return db_->IngestExternalFile(files, opts);
} }
~ExternalSSTFileTest() override {
DestroyDir(env_, sst_files_dir_).PermitUncheckedError();
}
protected: protected:
int last_file_id_ = 0; int last_file_id_ = 0;
std::string sst_files_dir_;
}; };
TEST_F(ExternalSSTFileTest, Basic) { TEST_F(ExternalSSTFileTest, Basic) {
@ -2382,10 +2384,18 @@ TEST_F(ExternalSSTFileTest, IngestFileWrittenWithCompressionDictionary) {
ASSERT_EQ(1, num_compression_dicts); ASSERT_EQ(1, num_compression_dicts);
} }
class ExternalSSTBlockChecksumTest
: public ExternalSSTFileTestBase,
public testing::WithParamInterface<uint32_t> {};
INSTANTIATE_TEST_CASE_P(FormatVersions, ExternalSSTBlockChecksumTest,
testing::ValuesIn(test::kFooterFormatVersionsToTest));
// Very slow, not worth the cost to run regularly // Very slow, not worth the cost to run regularly
TEST_F(ExternalSSTFileTest, DISABLED_HugeBlockChecksum) { TEST_P(ExternalSSTBlockChecksumTest, DISABLED_HugeBlockChecksum) {
BlockBasedTableOptions table_options;
table_options.format_version = GetParam();
for (auto t : GetSupportedChecksums()) { for (auto t : GetSupportedChecksums()) {
BlockBasedTableOptions table_options;
table_options.checksum = t; table_options.checksum = t;
Options options = CurrentOptions(); Options options = CurrentOptions();
options.table_factory.reset(NewBlockBasedTableFactory(table_options)); options.table_factory.reset(NewBlockBasedTableFactory(table_options));

6
db/version_set.cc
View file

@ -1271,8 +1271,8 @@ Status Version::GetTableProperties(std::shared_ptr<const TableProperties>* tp,
return s; return s;
} }
// By setting the magic number to kInvalidTableMagicNumber, we can by // By setting the magic number to kNullTableMagicNumber, we can bypass
// pass the magic number check in the footer. // the magic number check in the footer.
std::unique_ptr<RandomAccessFileReader> file_reader( std::unique_ptr<RandomAccessFileReader> file_reader(
new RandomAccessFileReader( new RandomAccessFileReader(
std::move(file), file_name, nullptr /* env */, io_tracer_, std::move(file), file_name, nullptr /* env */, io_tracer_,
@ -1281,7 +1281,7 @@ Status Version::GetTableProperties(std::shared_ptr<const TableProperties>* tp,
std::unique_ptr<TableProperties> props; std::unique_ptr<TableProperties> props;
s = ReadTableProperties( s = ReadTableProperties(
file_reader.get(), file_meta->fd.GetFileSize(), file_reader.get(), file_meta->fd.GetFileSize(),
Footer::kInvalidTableMagicNumber /* table's magic number */, *ioptions, Footer::kNullTableMagicNumber /* table's magic number */, *ioptions,
&props); &props);
if (!s.ok()) { if (!s.ok()) {
return s; return s;

1
include/rocksdb/stats_history.h
View file

@ -53,6 +53,7 @@ class StatsHistoryIterator {
// REQUIRES: Valid() // REQUIRES: Valid()
virtual uint64_t GetStatsTime() const = 0; virtual uint64_t GetStatsTime() const = 0;
// DEPRECATED (was never used)
virtual int GetFormatVersion() const { return -1; } virtual int GetFormatVersion() const { return -1; }
// Return the current stats history as an std::map which specifies the // Return the current stats history as an std::map which specifies the

10
include/rocksdb/table.h
View file

@ -44,6 +44,9 @@ class WritableFileWriter;
struct ConfigOptions; struct ConfigOptions;
struct EnvOptions; struct EnvOptions;
// Types of checksums to use for checking integrity of logical blocks within
// files. All checksums currently use 32 bits of checking power (1 in 4B
// chance of failing to detect random corruption).
enum ChecksumType : char { enum ChecksumType : char {
kNoChecksum = 0x0, kNoChecksum = 0x0,
kCRC32c = 0x1, kCRC32c = 0x1,
@ -390,10 +393,9 @@ struct BlockBasedTableOptions {
// Default: 0 (disabled) // Default: 0 (disabled)
uint32_t read_amp_bytes_per_bit = 0; uint32_t read_amp_bytes_per_bit = 0;
// We currently have five versions: // We currently have these versions:
// 0 -- This version is currently written out by all RocksDB's versions by // 0 -- This version can be read by really old RocksDB's. Doesn't support
// default. Can be read by really old RocksDB's. Doesn't support changing // changing checksum type (default is CRC32).
// checksum (default is CRC32).
// 1 -- Can be read by RocksDB's versions since 3.0. Supports non-default // 1 -- Can be read by RocksDB's versions since 3.0. Supports non-default
// checksum, like xxHash. It is written by RocksDB when // checksum, like xxHash. It is written by RocksDB when
// BlockBasedTableOptions::checksum is something other than kCRC32c. (version // BlockBasedTableOptions::checksum is something other than kCRC32c. (version

2
table/adaptive/adaptive_table_factory.cc
View file

@ -58,7 +58,7 @@ Status AdaptiveTableFactory::NewTableReader(
return plain_table_factory_->NewTableReader( return plain_table_factory_->NewTableReader(
table_reader_options, std::move(file), file_size, table); table_reader_options, std::move(file), file_size, table);
} else if (footer.table_magic_number() == kBlockBasedTableMagicNumber || } else if (footer.table_magic_number() == kBlockBasedTableMagicNumber ||
footer.table_magic_number() == kLegacyBlockBasedTableMagicNumber) { footer.table_magic_number() == kLegacyBlockBasedTableMagicNumber) {
return block_based_table_factory_->NewTableReader( return block_based_table_factory_->NewTableReader(
ro, table_reader_options, std::move(file), file_size, table, ro, table_reader_options, std::move(file), file_size, table,
prefetch_index_and_filter_in_cache); prefetch_index_and_filter_in_cache);

22
table/block_based/block_based_table_builder.cc
View file

@ -1744,7 +1744,7 @@ void BlockBasedTableBuilder::WritePropertiesBlock(
} }
#endif // !NDEBUG #endif // !NDEBUG
const std::string* properties_block_meta = &kPropertiesBlock; const std::string* properties_block_meta = &kPropertiesBlockName;
TEST_SYNC_POINT_CALLBACK( TEST_SYNC_POINT_CALLBACK(
"BlockBasedTableBuilder::WritePropertiesBlock:Meta", "BlockBasedTableBuilder::WritePropertiesBlock:Meta",
&properties_block_meta); &properties_block_meta);
@ -1769,7 +1769,7 @@ void BlockBasedTableBuilder::WriteCompressionDictBlock(
#endif // NDEBUG #endif // NDEBUG
} }
if (ok()) { if (ok()) {
meta_index_builder->Add(kCompressionDictBlock, meta_index_builder->Add(kCompressionDictBlockName,
compression_dict_block_handle); compression_dict_block_handle);
} }
} }
@ -1781,7 +1781,7 @@ void BlockBasedTableBuilder::WriteRangeDelBlock(
BlockHandle range_del_block_handle; BlockHandle range_del_block_handle;
WriteRawBlock(rep_->range_del_block.Finish(), kNoCompression, WriteRawBlock(rep_->range_del_block.Finish(), kNoCompression,
&range_del_block_handle, BlockType::kRangeDeletion); &range_del_block_handle, BlockType::kRangeDeletion);
meta_index_builder->Add(kRangeDelBlock, range_del_block_handle); meta_index_builder->Add(kRangeDelBlockName, range_del_block_handle);
} }
} }
@ -1799,14 +1799,16 @@ void BlockBasedTableBuilder::WriteFooter(BlockHandle& metaindex_block_handle,
// this is guaranteed by BlockBasedTableBuilder's constructor // this is guaranteed by BlockBasedTableBuilder's constructor
assert(r->table_options.checksum == kCRC32c || assert(r->table_options.checksum == kCRC32c ||
r->table_options.format_version != 0); r->table_options.format_version != 0);
Footer footer( Footer footer;
legacy ? kLegacyBlockBasedTableMagicNumber : kBlockBasedTableMagicNumber, footer
r->table_options.format_version); .set_table_magic_number(legacy ? kLegacyBlockBasedTableMagicNumber
footer.set_metaindex_handle(metaindex_block_handle); : kBlockBasedTableMagicNumber)
footer.set_index_handle(index_block_handle); .set_format_version(r->table_options.format_version)
footer.set_checksum(r->table_options.checksum); .set_metaindex_handle(metaindex_block_handle)
.set_index_handle(index_block_handle)
.set_checksum_type(r->table_options.checksum);
std::string footer_encoding; std::string footer_encoding;
footer.EncodeTo(&footer_encoding); footer.EncodeTo(&footer_encoding, r->get_offset());
assert(ok()); assert(ok());
IOStatus ios = r->file->Append(footer_encoding); IOStatus ios = r->file->Append(footer_encoding);
if (ios.ok()) { if (ios.ok()) {

2
table/block_based/block_based_table_factory.cc
View file

@ -650,7 +650,7 @@ Status BlockBasedTableFactory::ValidateOptions(
"Enable pin_l0_filter_and_index_blocks_in_cache, " "Enable pin_l0_filter_and_index_blocks_in_cache, "
", but block cache is disabled"); ", but block cache is disabled");
} }
if (!BlockBasedTableSupportedVersion(table_options_.format_version)) { if (!IsSupportedFormatVersion(table_options_.format_version)) {
return Status::InvalidArgument( return Status::InvalidArgument(
"Unsupported BlockBasedTable format_version. Please check " "Unsupported BlockBasedTable format_version. Please check "
"include/rocksdb/table.h for more info"); "include/rocksdb/table.h for more info");

53
table/block_based/block_based_table_reader.cc
View file

@ -600,7 +600,7 @@ Status BlockBasedTable::Open(
if (!s.ok()) { if (!s.ok()) {
return s; return s;
} }
if (!BlockBasedTableSupportedVersion(footer.version())) { if (!IsSupportedFormatVersion(footer.format_version())) {
return Status::Corruption( return Status::Corruption(
"Unknown Footer version. Maybe this file was created with newer " "Unknown Footer version. Maybe this file was created with newer "
"version of RocksDB?"); "version of RocksDB?");
@ -757,7 +757,7 @@ Status BlockBasedTable::ReadPropertiesBlock(
InternalIterator* meta_iter, const SequenceNumber largest_seqno) { InternalIterator* meta_iter, const SequenceNumber largest_seqno) {
Status s; Status s;
BlockHandle handle; BlockHandle handle;
s = FindOptionalMetaBlock(meta_iter, kPropertiesBlock, &handle); s = FindOptionalMetaBlock(meta_iter, kPropertiesBlockName, &handle);
if (!s.ok()) { if (!s.ok()) {
ROCKS_LOG_WARN(rep_->ioptions.logger, ROCKS_LOG_WARN(rep_->ioptions.logger,
@ -856,7 +856,7 @@ Status BlockBasedTable::ReadRangeDelBlock(
BlockCacheLookupContext* lookup_context) { BlockCacheLookupContext* lookup_context) {
Status s; Status s;
BlockHandle range_del_handle; BlockHandle range_del_handle;
s = FindOptionalMetaBlock(meta_iter, kRangeDelBlock, &range_del_handle); s = FindOptionalMetaBlock(meta_iter, kRangeDelBlockName, &range_del_handle);
if (!s.ok()) { if (!s.ok()) {
ROCKS_LOG_WARN( ROCKS_LOG_WARN(
rep_->ioptions.logger, rep_->ioptions.logger,
@ -925,7 +925,7 @@ Status BlockBasedTable::PrefetchIndexAndFilterBlocks(
rep_->index_type == BlockBasedTableOptions::kTwoLevelIndexSearch); rep_->index_type == BlockBasedTableOptions::kTwoLevelIndexSearch);
// Find compression dictionary handle // Find compression dictionary handle
s = FindOptionalMetaBlock(meta_iter, kCompressionDictBlock, s = FindOptionalMetaBlock(meta_iter, kCompressionDictBlockName,
&rep_->compression_dict_handle); &rep_->compression_dict_handle);
if (!s.ok()) { if (!s.ok()) {
return s; return s;
@ -1808,7 +1808,7 @@ void BlockBasedTable::RetrieveMultipleBlocks(
// begin address of each read request, we need to add the offset // begin address of each read request, we need to add the offset
// in each read request. Checksum is stored in the block trailer, // in each read request. Checksum is stored in the block trailer,
// beyond the payload size. // beyond the payload size.
s = VerifyBlockChecksum(footer.checksum(), data + req_offset, s = VerifyBlockChecksum(footer.checksum_type(), data + req_offset,
handle.size(), rep_->file->file_name(), handle.size(), rep_->file->file_name(),
handle.offset()); handle.offset());
TEST_SYNC_POINT_CALLBACK("RetrieveMultipleBlocks:VerifyChecksum", &s); TEST_SYNC_POINT_CALLBACK("RetrieveMultipleBlocks:VerifyChecksum", &s);
@ -1875,9 +1875,9 @@ void BlockBasedTable::RetrieveMultipleBlocks(
if (compression_type != kNoCompression) { if (compression_type != kNoCompression) {
UncompressionContext context(compression_type); UncompressionContext context(compression_type);
UncompressionInfo info(context, uncompression_dict, compression_type); UncompressionInfo info(context, uncompression_dict, compression_type);
s = UncompressBlockContents(info, req.result.data() + req_offset, s = UncompressBlockContents(
handle.size(), &contents, footer.version(), info, req.result.data() + req_offset, handle.size(), &contents,
rep_->ioptions, memory_allocator); footer.format_version(), rep_->ioptions, memory_allocator);
} else { } else {
// There are two cases here: // There are two cases here:
// 1) caller uses the shared buffer (scratch or direct io buffer); // 1) caller uses the shared buffer (scratch or direct io buffer);
@ -3008,15 +3008,15 @@ BlockType BlockBasedTable::GetBlockTypeForMetaBlockByName(
return BlockType::kFilter; return BlockType::kFilter;
} }
if (meta_block_name == kPropertiesBlock) { if (meta_block_name == kPropertiesBlockName) {
return BlockType::kProperties; return BlockType::kProperties;
} }
if (meta_block_name == kCompressionDictBlock) { if (meta_block_name == kCompressionDictBlockName) {
return BlockType::kCompressionDictionary; return BlockType::kCompressionDictionary;
} }
if (meta_block_name == kRangeDelBlock) { if (meta_block_name == kRangeDelBlockName) {
return BlockType::kRangeDeletion; return BlockType::kRangeDeletion;
} }
@ -3045,7 +3045,7 @@ Status BlockBasedTable::VerifyChecksumInMetaBlocks(
s = handle.DecodeFrom(&input); s = handle.DecodeFrom(&input);
BlockContents contents; BlockContents contents;
const Slice meta_block_name = index_iter->key(); const Slice meta_block_name = index_iter->key();
if (meta_block_name == kPropertiesBlock) { if (meta_block_name == kPropertiesBlockName) {
// Unfortunate special handling for properties block checksum w/ // Unfortunate special handling for properties block checksum w/
// global seqno // global seqno
std::unique_ptr<TableProperties> table_properties; std::unique_ptr<TableProperties> table_properties;
@ -3111,8 +3111,8 @@ bool BlockBasedTable::TEST_KeyInCache(const ReadOptions& options,
// 5. index_type // 5. index_type
Status BlockBasedTable::CreateIndexReader( Status BlockBasedTable::CreateIndexReader(
const ReadOptions& ro, FilePrefetchBuffer* prefetch_buffer, const ReadOptions& ro, FilePrefetchBuffer* prefetch_buffer,
InternalIterator* preloaded_meta_index_iter, bool use_cache, bool prefetch, InternalIterator* meta_iter, bool use_cache, bool prefetch, bool pin,
bool pin, BlockCacheLookupContext* lookup_context, BlockCacheLookupContext* lookup_context,
std::unique_ptr<IndexReader>* index_reader) { std::unique_ptr<IndexReader>* index_reader) {
// kHashSearch requires non-empty prefix_extractor but bypass checking // kHashSearch requires non-empty prefix_extractor but bypass checking
// prefix_extractor here since we have no access to MutableCFOptions. // prefix_extractor here since we have no access to MutableCFOptions.
@ -3136,25 +3136,12 @@ Status BlockBasedTable::CreateIndexReader(
case BlockBasedTableOptions::kHashSearch: { case BlockBasedTableOptions::kHashSearch: {
std::unique_ptr<Block> metaindex_guard; std::unique_ptr<Block> metaindex_guard;
std::unique_ptr<InternalIterator> metaindex_iter_guard; std::unique_ptr<InternalIterator> metaindex_iter_guard;
auto meta_index_iter = preloaded_meta_index_iter;
bool should_fallback = false; bool should_fallback = false;
if (rep_->internal_prefix_transform.get() == nullptr) { if (rep_->internal_prefix_transform.get() == nullptr) {
ROCKS_LOG_WARN(rep_->ioptions.logger, ROCKS_LOG_WARN(rep_->ioptions.logger,
"No prefix extractor passed in. Fall back to binary" "No prefix extractor passed in. Fall back to binary"
" search index."); " search index.");
should_fallback = true; should_fallback = true;
} else if (meta_index_iter == nullptr) {
auto s = ReadMetaIndexBlock(ro, prefetch_buffer, &metaindex_guard,
&metaindex_iter_guard);
if (!s.ok()) {
// we simply fall back to binary search in case there is any
// problem with prefix hash index loading.
ROCKS_LOG_WARN(rep_->ioptions.logger,
"Unable to read the metaindex block."
" Fall back to binary search index.");
should_fallback = true;
}
meta_index_iter = metaindex_iter_guard.get();
} }
if (should_fallback) { if (should_fallback) {
@ -3162,9 +3149,9 @@ Status BlockBasedTable::CreateIndexReader(
use_cache, prefetch, pin, use_cache, prefetch, pin,
lookup_context, index_reader); lookup_context, index_reader);
} else { } else {
return HashIndexReader::Create(this, ro, prefetch_buffer, return HashIndexReader::Create(this, ro, prefetch_buffer, meta_iter,
meta_index_iter, use_cache, prefetch, use_cache, prefetch, pin, lookup_context,
pin, lookup_context, index_reader); index_reader);
} }
} }
default: { default: {
@ -3357,17 +3344,17 @@ Status BlockBasedTable::DumpTable(WritableFile* out_file) {
if (!s.ok()) { if (!s.ok()) {
return s; return s;
} }
if (metaindex_iter->key() == kPropertiesBlock) { if (metaindex_iter->key() == kPropertiesBlockName) {
out_stream << " Properties block handle: " out_stream << " Properties block handle: "
<< metaindex_iter->value().ToString(true) << "\n"; << metaindex_iter->value().ToString(true) << "\n";
} else if (metaindex_iter->key() == kCompressionDictBlock) { } else if (metaindex_iter->key() == kCompressionDictBlockName) {
out_stream << " Compression dictionary block handle: " out_stream << " Compression dictionary block handle: "
<< metaindex_iter->value().ToString(true) << "\n"; << metaindex_iter->value().ToString(true) << "\n";
} else if (strstr(metaindex_iter->key().ToString().c_str(), } else if (strstr(metaindex_iter->key().ToString().c_str(),
"filter.rocksdb.") != nullptr) { "filter.rocksdb.") != nullptr) {
out_stream << " Filter block handle: " out_stream << " Filter block handle: "
<< metaindex_iter->value().ToString(true) << "\n"; << metaindex_iter->value().ToString(true) << "\n";
} else if (metaindex_iter->key() == kRangeDelBlock) { } else if (metaindex_iter->key() == kRangeDelBlockName) {
out_stream << " Range deletion block handle: " out_stream << " Range deletion block handle: "
<< metaindex_iter->value().ToString(true) << "\n"; << metaindex_iter->value().ToString(true) << "\n";
} }

1
table/block_based/block_based_table_reader.h
View file

@ -20,6 +20,7 @@
#include "table/block_based/filter_block.h" #include "table/block_based/filter_block.h"
#include "table/block_based/uncompression_dict_reader.h" #include "table/block_based/uncompression_dict_reader.h"
#include "table/format.h" #include "table/format.h"
#include "table/persistent_cache_options.h"
#include "table/table_properties_internal.h" #include "table/table_properties_internal.h"
#include "table/table_reader.h" #include "table/table_reader.h"
#include "table/two_level_iterator.h" #include "table/two_level_iterator.h"

21
table/block_based/partitioned_filter_block_test.cc
View file

@ -3,15 +3,15 @@
// COPYING file in the root directory) and Apache 2.0 License // COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory). // (found in the LICENSE.Apache file in the root directory).
#include "table/block_based/partitioned_filter_block.h"
#include <map> #include <map>
#include "rocksdb/filter_policy.h"
#include "table/block_based/block_based_table_reader.h"
#include "table/block_based/partitioned_filter_block.h"
#include "table/block_based/filter_policy_internal.h"
#include "index_builder.h" #include "index_builder.h"
#include "rocksdb/filter_policy.h"
#include "table/block_based/block_based_table_reader.h"
#include "table/block_based/filter_policy_internal.h"
#include "table/format.h"
#include "test_util/testharness.h" #include "test_util/testharness.h"
#include "test_util/testutil.h" #include "test_util/testutil.h"
#include "util/coding.h" #include "util/coding.h"
@ -292,10 +292,11 @@ class PartitionedFilterBlockTest
} }
}; };
INSTANTIATE_TEST_CASE_P(FormatDef, PartitionedFilterBlockTest, // Format versions potentially intersting to partitioning
testing::Values(test::kDefaultFormatVersion)); INSTANTIATE_TEST_CASE_P(FormatVersions, PartitionedFilterBlockTest,
INSTANTIATE_TEST_CASE_P(FormatLatest, PartitionedFilterBlockTest, testing::ValuesIn(std::set<uint32_t>{
testing::Values(test::kLatestFormatVersion)); 2, 3, 4, test::kDefaultFormatVersion,
kLatestFormatVersion}));
TEST_P(PartitionedFilterBlockTest, EmptyBuilder) { TEST_P(PartitionedFilterBlockTest, EmptyBuilder) {
std::unique_ptr<PartitionedIndexBuilder> pib(NewIndexBuilder()); std::unique_ptr<PartitionedIndexBuilder> pib(NewIndexBuilder());

8
table/block_fetcher.cc
View file

@ -32,9 +32,9 @@ inline void BlockFetcher::ProcessTrailerIfPresent() {
if (footer_.GetBlockTrailerSize() > 0) { if (footer_.GetBlockTrailerSize() > 0) {
assert(footer_.GetBlockTrailerSize() == BlockBasedTable::kBlockTrailerSize); assert(footer_.GetBlockTrailerSize() == BlockBasedTable::kBlockTrailerSize);
if (read_options_.verify_checksums) { if (read_options_.verify_checksums) {
io_status_ = status_to_io_status( io_status_ = status_to_io_status(VerifyBlockChecksum(
VerifyBlockChecksum(footer_.checksum(), slice_.data(), block_size_, footer_.checksum_type(), slice_.data(), block_size_,
file_->file_name(), handle_.offset())); file_->file_name(), handle_.offset()));
} }
compression_type_ = compression_type_ =
BlockBasedTable::GetBlockCompressionType(slice_.data(), block_size_); BlockBasedTable::GetBlockCompressionType(slice_.data(), block_size_);
@ -315,7 +315,7 @@ IOStatus BlockFetcher::ReadBlockContents() {
UncompressionContext context(compression_type_); UncompressionContext context(compression_type_);
UncompressionInfo info(context, uncompression_dict_, compression_type_); UncompressionInfo info(context, uncompression_dict_, compression_type_);
io_status_ = status_to_io_status(UncompressBlockContents( io_status_ = status_to_io_status(UncompressBlockContents(
info, slice_.data(), block_size_, contents_, footer_.version(), info, slice_.data(), block_size_, contents_, footer_.format_version(),
ioptions_, memory_allocator_)); ioptions_, memory_allocator_));
#ifndef NDEBUG #ifndef NDEBUG
num_heap_buf_memcpy_++; num_heap_buf_memcpy_++;

1
table/block_fetcher.h
View file

@ -12,6 +12,7 @@
#include "table/block_based/block.h" #include "table/block_based/block.h"
#include "table/block_based/block_type.h" #include "table/block_based/block_type.h"
#include "table/format.h" #include "table/format.h"
#include "table/persistent_cache_options.h"
namespace ROCKSDB_NAMESPACE { namespace ROCKSDB_NAMESPACE {

13
table/cuckoo/cuckoo_table_builder.cc
View file

@ -381,7 +381,7 @@ Status CuckooTableBuilder::Finish() {
return status_; return status_;
} }
meta_index_builder.Add(kPropertiesBlock, property_block_handle); meta_index_builder.Add(kPropertiesBlockName, property_block_handle);
Slice meta_index_block = meta_index_builder.Finish(); Slice meta_index_block = meta_index_builder.Finish();
BlockHandle meta_index_block_handle; BlockHandle meta_index_block_handle;
@ -393,11 +393,14 @@ Status CuckooTableBuilder::Finish() {
return status_; return status_;
} }
Footer footer(kCuckooTableMagicNumber, 1); Footer footer;
footer.set_metaindex_handle(meta_index_block_handle); footer.set_table_magic_number(kCuckooTableMagicNumber)
footer.set_index_handle(BlockHandle::NullBlockHandle()); .set_format_version(1)
.set_metaindex_handle(meta_index_block_handle)
.set_index_handle(BlockHandle::NullBlockHandle())
.set_checksum_type(kNoChecksum);
std::string footer_encoding; std::string footer_encoding;
footer.EncodeTo(&footer_encoding); footer.EncodeTo(&footer_encoding, offset);
io_status_ = file_->Append(footer_encoding); io_status_ = file_->Append(footer_encoding);
status_ = io_status_; status_ = io_status_;
return status_; return status_;

193
table/format.cc
View file

@ -20,9 +20,11 @@
#include "options/options_helper.h" #include "options/options_helper.h"
#include "rocksdb/env.h" #include "rocksdb/env.h"
#include "rocksdb/options.h" #include "rocksdb/options.h"
#include "rocksdb/table.h"
#include "table/block_based/block.h" #include "table/block_based/block.h"
#include "table/block_based/block_based_table_reader.h" #include "table/block_based/block_based_table_reader.h"
#include "table/persistent_cache_helper.h" #include "table/persistent_cache_helper.h"
#include "util/cast_util.h"
#include "util/coding.h" #include "util/coding.h"
#include "util/compression.h" #include "util/compression.h"
#include "util/crc32c.h" #include "util/crc32c.h"
@ -58,6 +60,15 @@ void BlockHandle::EncodeTo(std::string* dst) const {
PutVarint64Varint64(dst, offset_, size_); PutVarint64Varint64(dst, offset_, size_);
} }
char* BlockHandle::EncodeTo(char* dst) const {
// Sanity check that all fields have been set
assert(offset_ != ~uint64_t{0});
assert(size_ != ~uint64_t{0});
char* cur = EncodeVarint64(dst, offset_);
cur = EncodeVarint64(cur, size_);
return cur;
}
Status BlockHandle::DecodeFrom(Slice* input) { Status BlockHandle::DecodeFrom(Slice* input) {
if (GetVarint64(input, &offset_) && GetVarint64(input, &size_)) { if (GetVarint64(input, &offset_) && GetVarint64(input, &size_)) {
return Status::OK(); return Status::OK();
@ -166,8 +177,8 @@ inline uint64_t UpconvertLegacyFooterFormat(uint64_t magic_number) {
} }
} // namespace } // namespace
void Footer::set_table_magic_number(uint64_t magic_number) { Footer& Footer::set_table_magic_number(uint64_t magic_number) {
assert(!HasInitializedTableMagicNumber()); assert(table_magic_number_ == kNullTableMagicNumber);
table_magic_number_ = magic_number; table_magic_number_ = magic_number;
if (magic_number == kBlockBasedTableMagicNumber || if (magic_number == kBlockBasedTableMagicNumber ||
magic_number == kLegacyBlockBasedTableMagicNumber) { magic_number == kLegacyBlockBasedTableMagicNumber) {
@ -176,64 +187,80 @@ void Footer::set_table_magic_number(uint64_t magic_number) {
} else { } else {
block_trailer_size_ = 0; block_trailer_size_ = 0;
} }
return *this;
} }
// legacy footer format: // Footer format, in three parts:
// metaindex handle (varint64 offset, varint64 size) // * Part1
// index handle (varint64 offset, varint64 size) // -> format_version == 0 (inferred from legacy magic number)
// <padding> to make the total size 2 * BlockHandle::kMaxEncodedLength // <empty> (0 bytes)
// table_magic_number (8 bytes) // -> format_version >= 1
// new footer format: // checksum type (char, 1 byte)
// checksum type (char, 1 byte) // * Part2
// metaindex handle (varint64 offset, varint64 size) // metaindex handle (varint64 offset, varint64 size)
// index handle (varint64 offset, varint64 size) // index handle (varint64 offset, varint64 size)
// <padding> to make the total size 2 * BlockHandle::kMaxEncodedLength + 1 // <zero padding> for part2 size = 2 * BlockHandle::kMaxEncodedLength = 40
// footer version (4 bytes) // * Part3
// table_magic_number (8 bytes) // -> format_version == 0 (inferred from legacy magic number)
void Footer::EncodeTo(std::string* dst) const { // legacy magic number (8 bytes)
assert(HasInitializedTableMagicNumber()); // -> format_version >= 1 (inferred from NOT legacy magic number)
if (IsLegacyFooterFormat(table_magic_number())) { // format_version (uint32LE, 4 bytes), also called "footer version"
// has to be default checksum with legacy footer // newer magic number (8 bytes)
assert(checksum_ == kCRC32c); void Footer::EncodeTo(std::string* dst, uint64_t footer_offset) const {
const size_t original_size = dst->size(); (void)footer_offset; // Future use
metaindex_handle_.EncodeTo(dst);
index_handle_.EncodeTo(dst); // Sanitize magic numbers & format versions
dst->resize(original_size + 2 * BlockHandle::kMaxEncodedLength); // Padding assert(table_magic_number_ != kNullTableMagicNumber);
PutFixed32(dst, static_cast<uint32_t>(table_magic_number() & 0xffffffffu)); uint64_t magic = table_magic_number_;
PutFixed32(dst, static_cast<uint32_t>(table_magic_number() >> 32)); uint32_t fv = format_version_;
assert(dst->size() == original_size + kVersion0EncodedLength); assert(fv != kInvalidFormatVersion);
assert(IsLegacyFooterFormat(magic) == (fv == 0));
ChecksumType ct = checksum_type();
// Allocate destination data and generate parts 1 and 3
const size_t original_size = dst->size();
char* part2;
if (fv > 0) {
dst->resize(original_size + kNewVersionsEncodedLength);
char* part1 = &(*dst)[original_size];
part2 = part1 + 1;
char* part3 = part2 + 2 * BlockHandle::kMaxEncodedLength;
assert(&(*dst)[dst->size() - 1] + 1 - part3 == /* part 3 size */ 12);
// Generate parts 1 and 3
part1[0] = ct;
EncodeFixed32(part3, fv);
EncodeFixed64(part3 + 4, magic);
} else { } else {
const size_t original_size = dst->size(); dst->resize(original_size + kVersion0EncodedLength);
dst->push_back(static_cast<char>(checksum_)); part2 = &(*dst)[original_size];
metaindex_handle_.EncodeTo(dst); char* part3 = part2 + 2 * BlockHandle::kMaxEncodedLength;
index_handle_.EncodeTo(dst); assert(&(*dst)[dst->size() - 1] + 1 - part3 == /* part 3 size */ 8);
dst->resize(original_size + kNewVersionsEncodedLength - 12); // Padding // Legacy SST files use kCRC32c checksum but it's not stored in footer.
PutFixed32(dst, version()); assert(ct == kNoChecksum || ct == kCRC32c);
PutFixed32(dst, static_cast<uint32_t>(table_magic_number() & 0xffffffffu)); // Generate part 3 (part 1 empty)
PutFixed32(dst, static_cast<uint32_t>(table_magic_number() >> 32)); EncodeFixed64(part3, magic);
assert(dst->size() == original_size + kNewVersionsEncodedLength);
} }
// Generate Part2
// Variable size encode handles (sigh)
part2 = metaindex_handle_.EncodeTo(part2);
/*part2 = */ index_handle_.EncodeTo(part2);
// remainder of part2 is already zero padded
} }
Footer::Footer(uint64_t _table_magic_number, uint32_t _version) Status Footer::DecodeFrom(Slice* input, uint64_t input_offset) {
: version_(_version), (void)input_offset; // Future use
checksum_(kCRC32c),
table_magic_number_(_table_magic_number) {
// This should be guaranteed by constructor callers
assert(!IsLegacyFooterFormat(_table_magic_number) || version_ == 0);
}
Status Footer::DecodeFrom(Slice* input) { // Only decode to unused Footer
assert(!HasInitializedTableMagicNumber()); assert(table_magic_number_ == kNullTableMagicNumber);
assert(input != nullptr); assert(input != nullptr);
assert(input->size() >= kMinEncodedLength); assert(input->size() >= kMinEncodedLength);
const char* magic_ptr = const char* magic_ptr =
input->data() + input->size() - kMagicNumberLengthByte; input->data() + input->size() - kMagicNumberLengthByte;
const uint32_t magic_lo = DecodeFixed32(magic_ptr); uint64_t magic = DecodeFixed64(magic_ptr);
const uint32_t magic_hi = DecodeFixed32(magic_ptr + 4);
uint64_t magic = ((static_cast<uint64_t>(magic_hi) << 32) |
(static_cast<uint64_t>(magic_lo)));
// We check for legacy formats here and silently upconvert them // We check for legacy formats here and silently upconvert them
bool legacy = IsLegacyFooterFormat(magic); bool legacy = IsLegacyFooterFormat(magic);
@ -242,44 +269,51 @@ Status Footer::DecodeFrom(Slice* input) {
} }
set_table_magic_number(magic); set_table_magic_number(magic);
// Parse Part3
if (legacy) { if (legacy) {
// The size is already asserted to be at least kMinEncodedLength // The size is already asserted to be at least kMinEncodedLength
// at the beginning of the function // at the beginning of the function
input->remove_prefix(input->size() - kVersion0EncodedLength); input->remove_prefix(input->size() - kVersion0EncodedLength);
version_ = 0 /* legacy */; format_version_ = 0 /* legacy */;
checksum_ = kCRC32c; checksum_type_ = kCRC32c;
} else { } else {
version_ = DecodeFixed32(magic_ptr - 4); const char* part3_ptr = magic_ptr - 4;
// Footer version 1 and higher will always occupy exactly this many bytes. format_version_ = DecodeFixed32(part3_ptr);
// It consists of the checksum type, two block handles, padding, if (!IsSupportedFormatVersion(format_version_)) {
// a version number, and a magic number return Status::Corruption("Corrupt or unsupported format_version: " +
ROCKSDB_NAMESPACE::ToString(format_version_));
}
// All known format versions >= 1 occupy exactly this many bytes.
if (input->size() < kNewVersionsEncodedLength) { if (input->size() < kNewVersionsEncodedLength) {
return Status::Corruption("input is too short to be an sstable"); return Status::Corruption("Input is too short to be an SST file");
} else {
input->remove_prefix(input->size() - kNewVersionsEncodedLength);
} }
uint32_t chksum; uint64_t adjustment = input->size() - kNewVersionsEncodedLength;
if (!GetVarint32(input, &chksum)) { input->remove_prefix(adjustment);
return Status::Corruption("bad checksum type");
} // Parse Part1
checksum_ = static_cast<ChecksumType>(chksum); char chksum = input->data()[0];
if (chksum != static_cast<uint32_t>(checksum_) || checksum_type_ = lossless_cast<ChecksumType>(chksum);
!IsSupportedChecksumType(checksum_)) { if (!IsSupportedChecksumType(checksum_type())) {
return Status::Corruption("unknown checksum type " + return Status::Corruption(
ROCKSDB_NAMESPACE::ToString(chksum)); "Corrupt or unsupported checksum type: " +
ROCKSDB_NAMESPACE::ToString(lossless_cast<uint8_t>(chksum)));
} }
// Consume checksum type field
input->remove_prefix(1);
} }
// Parse Part2
Status result = metaindex_handle_.DecodeFrom(input); Status result = metaindex_handle_.DecodeFrom(input);
if (result.ok()) { if (result.ok()) {
result = index_handle_.DecodeFrom(input); result = index_handle_.DecodeFrom(input);
} }
if (result.ok()) { if (!result.ok()) {
// We skip over any leftover data (just padding for now) in "input" return result;
const char* end = magic_ptr + kMagicNumberLengthByte;
*input = Slice(end, input->data() + input->size() - end);
} }
return result;
// Mark all input consumed (skip padding & part3)
*input = Slice(input->data() + input->size(), 0U);
return Status::OK();
} }
std::string Footer::ToString() const { std::string Footer::ToString() const {
@ -293,14 +327,12 @@ std::string Footer::ToString() const {
result.append("table_magic_number: " + result.append("table_magic_number: " +
ROCKSDB_NAMESPACE::ToString(table_magic_number_) + "\n "); ROCKSDB_NAMESPACE::ToString(table_magic_number_) + "\n ");
} else { } else {
result.append("checksum: " + ROCKSDB_NAMESPACE::ToString(checksum_) +
"\n ");
result.append("metaindex handle: " + metaindex_handle_.ToString() + "\n "); result.append("metaindex handle: " + metaindex_handle_.ToString() + "\n ");
result.append("index handle: " + index_handle_.ToString() + "\n "); result.append("index handle: " + index_handle_.ToString() + "\n ");
result.append("footer version: " + ROCKSDB_NAMESPACE::ToString(version_) +
"\n ");
result.append("table_magic_number: " + result.append("table_magic_number: " +
ROCKSDB_NAMESPACE::ToString(table_magic_number_) + "\n "); ROCKSDB_NAMESPACE::ToString(table_magic_number_) + "\n ");
result.append("format version: " +
ROCKSDB_NAMESPACE::ToString(format_version_) + "\n ");
} }
return result; return result;
} }
@ -319,10 +351,9 @@ Status ReadFooterFromFile(const IOOptions& opts, RandomAccessFileReader* file,
std::string footer_buf; std::string footer_buf;
AlignedBuf internal_buf; AlignedBuf internal_buf;
Slice footer_input; Slice footer_input;
size_t read_offset = uint64_t read_offset = (file_size > Footer::kMaxEncodedLength)
(file_size > Footer::kMaxEncodedLength) ? file_size - Footer::kMaxEncodedLength
? static_cast<size_t>(file_size - Footer::kMaxEncodedLength) : 0;
: 0;
Status s; Status s;
// TODO: Need to pass appropriate deadline to TryReadFromCache(). Right now, // TODO: Need to pass appropriate deadline to TryReadFromCache(). Right now,
// there is no readahead for point lookups, so TryReadFromCache will fail if // there is no readahead for point lookups, so TryReadFromCache will fail if
@ -353,7 +384,7 @@ Status ReadFooterFromFile(const IOOptions& opts, RandomAccessFileReader* file,
file->file_name()); file->file_name());
} }
s = footer->DecodeFrom(&footer_input); s = footer->DecodeFrom(&footer_input, read_offset);
if (!s.ok()) { if (!s.ok()) {
return s; return s;
} }
@ -376,7 +407,7 @@ inline uint32_t ModifyChecksumForLastByte(uint32_t checksum, char last_byte) {
// more byte, except we don't need to re-mix the input checksum as long as // more byte, except we don't need to re-mix the input checksum as long as
// we do this step only once (per checksum). // we do this step only once (per checksum).
const uint32_t kRandomPrime = 0x6b9083d9; const uint32_t kRandomPrime = 0x6b9083d9;
return checksum ^ static_cast<uint8_t>(last_byte) * kRandomPrime; return checksum ^ lossless_cast<uint8_t>(last_byte) * kRandomPrime;
} }
} // namespace } // namespace

165
table/format.h
View file

@ -8,21 +8,20 @@
// found in the LICENSE file. See the AUTHORS file for names of contributors. // found in the LICENSE file. See the AUTHORS file for names of contributors.
#pragma once #pragma once
#include <stdint.h>
#include <cstdint>
#include <string> #include <string>
#include "file/file_prefetch_buffer.h" #include "file/file_prefetch_buffer.h"
#include "file/random_access_file_reader.h" #include "file/random_access_file_reader.h"
#include "rocksdb/options.h"
#include "rocksdb/slice.h"
#include "rocksdb/status.h"
#include "rocksdb/table.h"
#include "memory/memory_allocator.h" #include "memory/memory_allocator.h"
#include "options/cf_options.h" #include "options/cf_options.h"
#include "port/malloc.h" #include "port/malloc.h"
#include "port/port.h" // noexcept #include "port/port.h" // noexcept
#include "table/persistent_cache_options.h" #include "rocksdb/slice.h"
#include "rocksdb/status.h"
#include "rocksdb/table.h"
#include "util/hash.h"
namespace ROCKSDB_NAMESPACE { namespace ROCKSDB_NAMESPACE {
@ -32,7 +31,7 @@ struct ReadOptions;
extern bool ShouldReportDetailedTime(Env* env, Statistics* stats); extern bool ShouldReportDetailedTime(Env* env, Statistics* stats);
// the length of the magic number in bytes. // the length of the magic number in bytes.
const int kMagicNumberLengthByte = 8; constexpr uint32_t kMagicNumberLengthByte = 8;
// BlockHandle is a pointer to the extent of a file that stores a data // BlockHandle is a pointer to the extent of a file that stores a data
// block or a meta block. // block or a meta block.
@ -52,6 +51,7 @@ class BlockHandle {
void set_size(uint64_t _size) { size_ = _size; } void set_size(uint64_t _size) { size_ = _size; }
void EncodeTo(std::string* dst) const; void EncodeTo(std::string* dst) const;
char* EncodeTo(char* dst) const;
Status DecodeFrom(Slice* input); Status DecodeFrom(Slice* input);
Status DecodeSizeFrom(uint64_t offset, Slice* input); Status DecodeSizeFrom(uint64_t offset, Slice* input);
@ -65,7 +65,7 @@ class BlockHandle {
static const BlockHandle& NullBlockHandle() { return kNullBlockHandle; } static const BlockHandle& NullBlockHandle() { return kNullBlockHandle; }
// Maximum encoding length of a BlockHandle // Maximum encoding length of a BlockHandle
enum { kMaxEncodedLength = 10 + 10 }; static constexpr uint32_t kMaxEncodedLength = 2 * kMaxVarint64Length;
inline bool operator==(const BlockHandle& rhs) const { inline bool operator==(const BlockHandle& rhs) const {
return offset_ == rhs.offset_ && size_ == rhs.size_; return offset_ == rhs.offset_ && size_ == rhs.size_;
@ -117,94 +117,107 @@ inline uint32_t GetCompressFormatForVersion(uint32_t format_version) {
return format_version >= 2 ? 2 : 1; return format_version >= 2 ? 2 : 1;
} }
inline bool BlockBasedTableSupportedVersion(uint32_t version) { constexpr uint32_t kLatestFormatVersion = 5;
return version <= 5;
inline bool IsSupportedFormatVersion(uint32_t version) {
return version <= kLatestFormatVersion;
} }
// Footer encapsulates the fixed information stored at the tail // Footer encapsulates the fixed information stored at the tail end of every
// end of every table file. // SST file. In general, it should only include things that cannot go
// elsewhere under the metaindex block. For example, checksum_type is
// required for verifying metaindex block checksum (when applicable), but
// index block handle can easily go in metaindex block (possible future).
class Footer { class Footer {
public: public:
// Constructs a footer without specifying its table magic number. Footer() {}
// In such case, the table magic number of such footer should be
// initialized via @ReadFooterFromFile().
// Use this when you plan to load Footer with DecodeFrom(). Never use this
// when you plan to EncodeTo.
Footer() : Footer(kInvalidTableMagicNumber, 0) {}
// Use this constructor when you plan to write out the footer using // Uses builder pattern rather than distinctive ctors
// EncodeTo(). Never use this constructor with DecodeFrom().
// `version` is same as `format_version` for block-based table.
Footer(uint64_t table_magic_number, uint32_t version);
// The version of the footer in this file
uint32_t version() const { return version_; }
// The checksum type used in this file
ChecksumType checksum() const { return checksum_; }
void set_checksum(const ChecksumType c) { checksum_ = c; }
// The block handle for the metaindex block of the table
const BlockHandle& metaindex_handle() const { return metaindex_handle_; }
void set_metaindex_handle(const BlockHandle& h) { metaindex_handle_ = h; }
// The block handle for the index block of the table
const BlockHandle& index_handle() const { return index_handle_; }
void set_index_handle(const BlockHandle& h) { index_handle_ = h; }
// Table magic number identifies file as RocksDB SST file and which kind of
// SST format is use.
Footer& set_table_magic_number(uint64_t tmn);
uint64_t table_magic_number() const { return table_magic_number_; } uint64_t table_magic_number() const { return table_magic_number_; }
void EncodeTo(std::string* dst) const; // A version (footer and more) within a kind of SST. (It would add more
// unnecessary complexity to separate footer versions and
// BBTO::format_version.)
Footer& set_format_version(uint32_t fv) {
format_version_ = fv;
return *this;
}
uint32_t format_version() const { return format_version_; }
// Set the current footer based on the input slice. // Block handle for metaindex block.
// Footer& set_metaindex_handle(const BlockHandle& h) {
// REQUIRES: table_magic_number_ is not set (i.e., metaindex_handle_ = h;
// HasInitializedTableMagicNumber() is true). The function will initialize the return *this;
// magic number }
Status DecodeFrom(Slice* input); const BlockHandle& metaindex_handle() const { return metaindex_handle_; }
// Encoded length of a Footer. Note that the serialization of a Footer will // Block handle for (top-level) index block.
// always occupy at least kMinEncodedLength bytes. If fields are changed Footer& set_index_handle(const BlockHandle& h) {
// the version number should be incremented and kMaxEncodedLength should be index_handle_ = h;
// increased accordingly. return *this;
enum { }
// Footer version 0 (legacy) will always occupy exactly this many bytes. const BlockHandle& index_handle() const { return index_handle_; }
// It consists of two block handles, padding, and a magic number.
kVersion0EncodedLength = 2 * BlockHandle::kMaxEncodedLength + 8,
// Footer of versions 1 and higher will always occupy exactly this many
// bytes. It consists of the checksum type, two block handles, padding,
// a version number (bigger than 1), and a magic number
kNewVersionsEncodedLength = 1 + 2 * BlockHandle::kMaxEncodedLength + 4 + 8,
kMinEncodedLength = kVersion0EncodedLength,
kMaxEncodedLength = kNewVersionsEncodedLength,
};
static const uint64_t kInvalidTableMagicNumber = 0; // Checksum type used in the file.
Footer& set_checksum_type(ChecksumType ct) {
checksum_type_ = ct;
return *this;
}
ChecksumType checksum_type() const {
return static_cast<ChecksumType>(checksum_type_);
}
// convert this object to a human readable form // Appends serialized footer to `dst`. The starting offset of the footer
// within the file is required for future work.
void EncodeTo(std::string* dst, uint64_t footer_offset) const;
// Deserialize a footer (populate fields) from `input` and check for various
// corruptions. On success (and some error cases) `input` is advanced past
// the footer. Like EncodeTo, the offset within the file will be nedded for
// future work
Status DecodeFrom(Slice* input, uint64_t input_offset);
// Convert this object to a human readable form
std::string ToString() const; std::string ToString() const;
// Block trailer size used by file with this footer (e.g. 5 for block-based // Block trailer size used by file with this footer (e.g. 5 for block-based
// table and 0 for plain table) // table and 0 for plain table)
inline size_t GetBlockTrailerSize() const { return block_trailer_size_; } inline size_t GetBlockTrailerSize() const { return block_trailer_size_; }
// Encoded lengths of Footers. Bytes for serialized Footer will always be
// >= kMinEncodedLength and <= kMaxEncodedLength.
//
// Footer version 0 (legacy) will always occupy exactly this many bytes.
// It consists of two block handles, padding, and a magic number.
static constexpr uint32_t kVersion0EncodedLength =
2 * BlockHandle::kMaxEncodedLength + kMagicNumberLengthByte;
static constexpr uint32_t kMinEncodedLength = kVersion0EncodedLength;
// Footer of versions 1 and higher will always occupy exactly this many
// bytes. It originally consisted of the checksum type, two block handles,
// padding (to maximum handle encoding size), a format version number, and a
// magic number.
static constexpr uint32_t kNewVersionsEncodedLength =
1 + 2 * BlockHandle::kMaxEncodedLength + 4 + kMagicNumberLengthByte;
static constexpr uint32_t kMaxEncodedLength = kNewVersionsEncodedLength;
static constexpr uint64_t kNullTableMagicNumber = 0;
private: private:
// REQUIRES: magic number wasn't initialized. static constexpr uint32_t kInvalidFormatVersion = 0xffffffffU;
void set_table_magic_number(uint64_t magic_number); static constexpr int kInvalidChecksumType =
(1 << (sizeof(ChecksumType) * 8)) | kNoChecksum;
// return true if @table_magic_number_ is set to a value different uint64_t table_magic_number_ = kNullTableMagicNumber;
// from @kInvalidTableMagicNumber. uint32_t format_version_ = kInvalidFormatVersion;
bool HasInitializedTableMagicNumber() const {
return (table_magic_number_ != kInvalidTableMagicNumber);
}
uint32_t version_;
ChecksumType checksum_;
uint8_t block_trailer_size_ = 0; // set based on magic number
BlockHandle metaindex_handle_; BlockHandle metaindex_handle_;
BlockHandle index_handle_; BlockHandle index_handle_;
uint64_t table_magic_number_ = 0; int checksum_type_ = kInvalidChecksumType;
uint8_t block_trailer_size_ = 0; // set based on magic number
}; };
// Read the footer from file // Read the footer from file

16
table/meta_blocks.cc
View file

@ -26,11 +26,11 @@
namespace ROCKSDB_NAMESPACE { namespace ROCKSDB_NAMESPACE {
const std::string kPropertiesBlock = "rocksdb.properties"; const std::string kPropertiesBlockName = "rocksdb.properties";
// Old property block name for backward compatibility // Old property block name for backward compatibility
const std::string kPropertiesBlockOldName = "rocksdb.stats"; const std::string kPropertiesBlockOldName = "rocksdb.stats";
const std::string kCompressionDictBlock = "rocksdb.compression_dict"; const std::string kCompressionDictBlockName = "rocksdb.compression_dict";
const std::string kRangeDelBlock = "rocksdb.range_del"; const std::string kRangeDelBlockName = "rocksdb.range_del";
MetaIndexBuilder::MetaIndexBuilder() MetaIndexBuilder::MetaIndexBuilder()
: meta_index_block_(new BlockBuilder(1 /* restart interval */)) {} : meta_index_block_(new BlockBuilder(1 /* restart interval */)) {}
@ -381,7 +381,7 @@ Status ReadTablePropertiesHelper(
// Modified version of BlockFetcher checksum verification // Modified version of BlockFetcher checksum verification
// (See write_global_seqno comment above) // (See write_global_seqno comment above)
if (s.ok() && footer.GetBlockTrailerSize() > 0) { if (s.ok() && footer.GetBlockTrailerSize() > 0) {
s = VerifyBlockChecksum(footer.checksum(), properties_block.data(), s = VerifyBlockChecksum(footer.checksum_type(), properties_block.data(),
block_size, file->file_name(), handle.offset()); block_size, file->file_name(), handle.offset());
if (s.IsCorruption()) { if (s.IsCorruption()) {
if (new_table_properties->external_sst_file_global_seqno_offset != 0) { if (new_table_properties->external_sst_file_global_seqno_offset != 0) {
@ -391,8 +391,8 @@ Status ReadTablePropertiesHelper(
new_table_properties->external_sst_file_global_seqno_offset - new_table_properties->external_sst_file_global_seqno_offset -
handle.offset(); handle.offset();
EncodeFixed64(&tmp_buf[static_cast<size_t>(global_seqno_offset)], 0); EncodeFixed64(&tmp_buf[static_cast<size_t>(global_seqno_offset)], 0);
s = VerifyBlockChecksum(footer.checksum(), tmp_buf.data(), block_size, s = VerifyBlockChecksum(footer.checksum_type(), tmp_buf.data(),
file->file_name(), handle.offset()); block_size, file->file_name(), handle.offset());
} }
} }
} }
@ -413,7 +413,7 @@ Status ReadTableProperties(RandomAccessFileReader* file, uint64_t file_size,
BlockHandle block_handle; BlockHandle block_handle;
Footer footer; Footer footer;
Status s = FindMetaBlockInFile(file, file_size, table_magic_number, ioptions, Status s = FindMetaBlockInFile(file, file_size, table_magic_number, ioptions,
kPropertiesBlock, &block_handle, kPropertiesBlockName, &block_handle,
memory_allocator, prefetch_buffer, &footer); memory_allocator, prefetch_buffer, &footer);
if (!s.ok()) { if (!s.ok()) {
return s; return s;
@ -438,7 +438,7 @@ Status FindOptionalMetaBlock(InternalIterator* meta_index_iter,
if (meta_index_iter->Valid() && meta_index_iter->key() == meta_block_name) { if (meta_index_iter->Valid() && meta_index_iter->key() == meta_block_name) {
Slice v = meta_index_iter->value(); Slice v = meta_index_iter->value();
return block_handle->DecodeFrom(&v); return block_handle->DecodeFrom(&v);
} else if (meta_block_name == kPropertiesBlock) { } else if (meta_block_name == kPropertiesBlockName) {
// Have to try old name for compatibility // Have to try old name for compatibility
meta_index_iter->Seek(kPropertiesBlockOldName); meta_index_iter->Seek(kPropertiesBlockOldName);
if (meta_index_iter->status().ok() && meta_index_iter->Valid() && if (meta_index_iter->status().ok() && meta_index_iter->Valid() &&

6
table/meta_blocks.h
View file

@ -31,10 +31,10 @@ class RandomAccessFile;
struct TableProperties; struct TableProperties;
// Meta block names for metaindex // Meta block names for metaindex
extern const std::string kPropertiesBlock; extern const std::string kPropertiesBlockName;
extern const std::string kPropertiesBlockOldName; extern const std::string kPropertiesBlockOldName;
extern const std::string kCompressionDictBlock; extern const std::string kCompressionDictBlockName;
extern const std::string kRangeDelBlock; extern const std::string kRangeDelBlockName;
class MetaIndexBuilder { class MetaIndexBuilder {
public: public:

12
table/plain/plain_table_builder.cc
View file

@ -279,7 +279,7 @@ Status PlainTableBuilder::Finish() {
if (!s.ok()) { if (!s.ok()) {
return std::move(s); return std::move(s);
} }
meta_index_builer.Add(kPropertiesBlock, property_block_handle); meta_index_builer.Add(kPropertiesBlockName, property_block_handle);
// -- write metaindex block // -- write metaindex block
BlockHandle metaindex_block_handle; BlockHandle metaindex_block_handle;
@ -292,11 +292,13 @@ Status PlainTableBuilder::Finish() {
// Write Footer // Write Footer
// no need to write out new footer if we're using default checksum // no need to write out new footer if we're using default checksum
Footer footer(kLegacyPlainTableMagicNumber, 0); Footer footer;
footer.set_metaindex_handle(metaindex_block_handle); footer.set_table_magic_number(kLegacyPlainTableMagicNumber)
footer.set_index_handle(BlockHandle::NullBlockHandle()); .set_format_version(0)
.set_metaindex_handle(metaindex_block_handle)
.set_index_handle(BlockHandle::NullBlockHandle());
std::string footer_encoding; std::string footer_encoding;
footer.EncodeTo(&footer_encoding); footer.EncodeTo(&footer_encoding, offset_);
io_status_ = file_->Append(footer_encoding); io_status_ = file_->Append(footer_encoding);
if (io_status_.ok()) { if (io_status_.ok()) {
offset_ += footer_encoding.size(); offset_ += footer_encoding.size();

2
table/sst_file_dumper.cc
View file

@ -74,7 +74,7 @@ Status SstFileDumper::GetTableReader(const std::string& file_path) {
// Warning about 'magic_number' being uninitialized shows up only in UBsan // Warning about 'magic_number' being uninitialized shows up only in UBsan
// builds. Though access is guarded by 's.ok()' checks, fix the issue to // builds. Though access is guarded by 's.ok()' checks, fix the issue to
// avoid any warnings. // avoid any warnings.
uint64_t magic_number = Footer::kInvalidTableMagicNumber; uint64_t magic_number = Footer::kNullTableMagicNumber;
// read table magic number // read table magic number
Footer footer; Footer footer;

144
table/table_test.cc
View file

@ -21,16 +21,15 @@
#include <unordered_set> #include <unordered_set>
#include <vector> #include <vector>
#include "block_fetcher.h"
#include "cache/lru_cache.h" #include "cache/lru_cache.h"
#include "db/dbformat.h" #include "db/dbformat.h"
#include "db/memtable.h" #include "db/memtable.h"
#include "db/write_batch_internal.h" #include "db/write_batch_internal.h"
#include "memtable/stl_wrappers.h" #include "memtable/stl_wrappers.h"
#include "meta_blocks.h"
#include "monitoring/statistics.h" #include "monitoring/statistics.h"
#include "options/options_helper.h" #include "options/options_helper.h"
#include "port/port.h" #include "port/port.h"
#include "port/stack_trace.h"
#include "rocksdb/cache.h" #include "rocksdb/cache.h"
#include "rocksdb/compression_type.h" #include "rocksdb/compression_type.h"
#include "rocksdb/db.h" #include "rocksdb/db.h"
@ -53,9 +52,11 @@
#include "table/block_based/block_based_table_reader.h" #include "table/block_based/block_based_table_reader.h"
#include "table/block_based/block_builder.h" #include "table/block_based/block_builder.h"
#include "table/block_based/flush_block_policy.h" #include "table/block_based/flush_block_policy.h"
#include "table/block_fetcher.h"
#include "table/format.h" #include "table/format.h"
#include "table/get_context.h" #include "table/get_context.h"
#include "table/internal_iterator.h" #include "table/internal_iterator.h"
#include "table/meta_blocks.h"
#include "table/plain/plain_table_factory.h" #include "table/plain/plain_table_factory.h"
#include "table/scoped_arena_iterator.h" #include "table/scoped_arena_iterator.h"
#include "table/sst_file_writer_collectors.h" #include "table/sst_file_writer_collectors.h"
@ -1356,10 +1357,8 @@ class FileChecksumTestHelper {
uint64_t FileChecksumTestHelper::checksum_uniq_id_ = 1; uint64_t FileChecksumTestHelper::checksum_uniq_id_ = 1;
INSTANTIATE_TEST_CASE_P(FormatDef, BlockBasedTableTest, INSTANTIATE_TEST_CASE_P(FormatVersions, BlockBasedTableTest,
testing::Values(test::kDefaultFormatVersion)); testing::ValuesIn(test::kFooterFormatVersionsToTest));
INSTANTIATE_TEST_CASE_P(FormatLatest, BlockBasedTableTest,
testing::Values(test::kLatestFormatVersion));
// This test serves as the living tutorial for the prefix scan of user collected // This test serves as the living tutorial for the prefix scan of user collected
// properties. // properties.
@ -2228,7 +2227,8 @@ TEST_P(BlockBasedTableTest, BadChecksumType) {
const MutableCFOptions new_moptions(options); const MutableCFOptions new_moptions(options);
Status s = c.Reopen(new_ioptions, new_moptions); Status s = c.Reopen(new_ioptions, new_moptions);
ASSERT_NOK(s); ASSERT_NOK(s);
ASSERT_MATCHES_REGEX(s.ToString(), "Corruption: unknown checksum type 123.*"); ASSERT_EQ(s.ToString(),
"Corruption: Corrupt or unsupported checksum type: 123");
} }
namespace { namespace {
@ -4166,106 +4166,107 @@ TEST_P(ParameterizedHarnessTest, SimpleSpecialKey) {
} }
TEST(TableTest, FooterTests) { TEST(TableTest, FooterTests) {
Random* r = Random::GetTLSInstance();
uint64_t data_size = (uint64_t{1} << r->Uniform(40)) + r->Uniform(100);
uint64_t index_size = r->Uniform(1000000000);
uint64_t metaindex_size = r->Uniform(1000000);
// 5 == block trailer size
BlockHandle index(data_size + 5, index_size);
BlockHandle meta_index(data_size + index_size + 2 * 5, metaindex_size);
uint64_t footer_offset = data_size + metaindex_size + index_size + 3 * 5;
{ {
// upconvert legacy block based // upconvert legacy block based
std::string encoded; std::string encoded;
Footer footer(kLegacyBlockBasedTableMagicNumber, 0); Footer footer;
BlockHandle meta_index(10, 5), index(20, 15); footer.set_table_magic_number(kLegacyBlockBasedTableMagicNumber)
footer.set_metaindex_handle(meta_index); .set_format_version(0)
footer.set_index_handle(index); .set_metaindex_handle(meta_index)
footer.EncodeTo(&encoded); .set_index_handle(index);
footer.EncodeTo(&encoded, footer_offset);
Footer decoded_footer; Footer decoded_footer;
Slice encoded_slice(encoded); Slice encoded_slice(encoded);
ASSERT_OK(decoded_footer.DecodeFrom(&encoded_slice)); ASSERT_OK(decoded_footer.DecodeFrom(&encoded_slice, footer_offset));
ASSERT_EQ(decoded_footer.table_magic_number(), kBlockBasedTableMagicNumber); ASSERT_EQ(decoded_footer.table_magic_number(), kBlockBasedTableMagicNumber);
ASSERT_EQ(decoded_footer.checksum(), kCRC32c); ASSERT_EQ(decoded_footer.checksum_type(), kCRC32c);
ASSERT_EQ(decoded_footer.metaindex_handle().offset(), meta_index.offset()); ASSERT_EQ(decoded_footer.metaindex_handle().offset(), meta_index.offset());
ASSERT_EQ(decoded_footer.metaindex_handle().size(), meta_index.size()); ASSERT_EQ(decoded_footer.metaindex_handle().size(), meta_index.size());
ASSERT_EQ(decoded_footer.index_handle().offset(), index.offset()); ASSERT_EQ(decoded_footer.index_handle().offset(), index.offset());
ASSERT_EQ(decoded_footer.index_handle().size(), index.size()); ASSERT_EQ(decoded_footer.index_handle().size(), index.size());
ASSERT_EQ(decoded_footer.version(), 0U); ASSERT_EQ(decoded_footer.format_version(), 0U);
ASSERT_EQ(decoded_footer.GetBlockTrailerSize(), 5U);
} }
// block based, various checksums, various versions
for (auto t : GetSupportedChecksums()) { for (auto t : GetSupportedChecksums()) {
// block based, various checksums for (uint32_t fv = 1; IsSupportedFormatVersion(fv); ++fv) {
std::string encoded; std::string encoded;
Footer footer(kBlockBasedTableMagicNumber, 1); Footer footer;
BlockHandle meta_index(10, 5), index(20, 15); footer.set_table_magic_number(kBlockBasedTableMagicNumber)
footer.set_metaindex_handle(meta_index); .set_format_version(fv)
footer.set_index_handle(index); .set_metaindex_handle(meta_index)
footer.set_checksum(t); .set_index_handle(index)
footer.EncodeTo(&encoded); .set_checksum_type(t);
Footer decoded_footer; footer.EncodeTo(&encoded, footer_offset);
Slice encoded_slice(encoded); Footer decoded_footer;
ASSERT_OK(decoded_footer.DecodeFrom(&encoded_slice)); Slice encoded_slice(encoded);
ASSERT_EQ(decoded_footer.table_magic_number(), kBlockBasedTableMagicNumber); ASSERT_OK(decoded_footer.DecodeFrom(&encoded_slice, footer_offset));
ASSERT_EQ(decoded_footer.checksum(), t); ASSERT_EQ(decoded_footer.table_magic_number(),
ASSERT_EQ(decoded_footer.metaindex_handle().offset(), meta_index.offset()); kBlockBasedTableMagicNumber);
ASSERT_EQ(decoded_footer.metaindex_handle().size(), meta_index.size()); ASSERT_EQ(decoded_footer.checksum_type(), t);
ASSERT_EQ(decoded_footer.index_handle().offset(), index.offset()); ASSERT_EQ(decoded_footer.metaindex_handle().offset(),
ASSERT_EQ(decoded_footer.index_handle().size(), index.size()); meta_index.offset());
ASSERT_EQ(decoded_footer.version(), 1U); ASSERT_EQ(decoded_footer.metaindex_handle().size(), meta_index.size());
ASSERT_EQ(decoded_footer.index_handle().offset(), index.offset());
ASSERT_EQ(decoded_footer.index_handle().size(), index.size());
ASSERT_EQ(decoded_footer.format_version(), fv);
ASSERT_EQ(decoded_footer.GetBlockTrailerSize(), 5U);
}
} }
// Plain table is not supported in ROCKSDB_LITE // Plain table is not supported in ROCKSDB_LITE
#ifndef ROCKSDB_LITE #ifndef ROCKSDB_LITE
{ {
// upconvert legacy plain table // upconvert legacy plain table
std::string encoded; std::string encoded;
Footer footer(kLegacyPlainTableMagicNumber, 0); Footer footer;
BlockHandle meta_index(10, 5), index(20, 15); footer.set_table_magic_number(kLegacyPlainTableMagicNumber)
footer.set_metaindex_handle(meta_index); .set_format_version(0)
footer.set_index_handle(index); .set_metaindex_handle(meta_index)
footer.EncodeTo(&encoded); .set_index_handle(index);
footer.EncodeTo(&encoded, footer_offset);
Footer decoded_footer; Footer decoded_footer;
Slice encoded_slice(encoded); Slice encoded_slice(encoded);
ASSERT_OK(decoded_footer.DecodeFrom(&encoded_slice)); ASSERT_OK(decoded_footer.DecodeFrom(&encoded_slice, footer_offset));
ASSERT_EQ(decoded_footer.table_magic_number(), kPlainTableMagicNumber); ASSERT_EQ(decoded_footer.table_magic_number(), kPlainTableMagicNumber);
ASSERT_EQ(decoded_footer.checksum(), kCRC32c); ASSERT_EQ(decoded_footer.checksum_type(), kCRC32c);
ASSERT_EQ(decoded_footer.metaindex_handle().offset(), meta_index.offset()); ASSERT_EQ(decoded_footer.metaindex_handle().offset(), meta_index.offset());
ASSERT_EQ(decoded_footer.metaindex_handle().size(), meta_index.size()); ASSERT_EQ(decoded_footer.metaindex_handle().size(), meta_index.size());
ASSERT_EQ(decoded_footer.index_handle().offset(), index.offset()); ASSERT_EQ(decoded_footer.index_handle().offset(), index.offset());
ASSERT_EQ(decoded_footer.index_handle().size(), index.size()); ASSERT_EQ(decoded_footer.index_handle().size(), index.size());
ASSERT_EQ(decoded_footer.version(), 0U); ASSERT_EQ(decoded_footer.format_version(), 0U);
ASSERT_EQ(decoded_footer.GetBlockTrailerSize(), 0U);
} }
{ {
// xxhash plain table (not currently used) // xxhash plain table (not currently used)
std::string encoded; std::string encoded;
Footer footer(kPlainTableMagicNumber, 1); Footer footer;
BlockHandle meta_index(10, 5), index(20, 15); footer.set_table_magic_number(kPlainTableMagicNumber)
footer.set_metaindex_handle(meta_index); .set_format_version(1)
footer.set_index_handle(index); .set_metaindex_handle(meta_index)
footer.set_checksum(kxxHash); .set_index_handle(index)
footer.EncodeTo(&encoded); .set_checksum_type(kxxHash);
footer.EncodeTo(&encoded, footer_offset);
Footer decoded_footer; Footer decoded_footer;
Slice encoded_slice(encoded); Slice encoded_slice(encoded);
ASSERT_OK(decoded_footer.DecodeFrom(&encoded_slice)); ASSERT_OK(decoded_footer.DecodeFrom(&encoded_slice, footer_offset));
ASSERT_EQ(decoded_footer.table_magic_number(), kPlainTableMagicNumber); ASSERT_EQ(decoded_footer.table_magic_number(), kPlainTableMagicNumber);
ASSERT_EQ(decoded_footer.checksum(), kxxHash); ASSERT_EQ(decoded_footer.checksum_type(), kxxHash);
ASSERT_EQ(decoded_footer.metaindex_handle().offset(), meta_index.offset()); ASSERT_EQ(decoded_footer.metaindex_handle().offset(), meta_index.offset());
ASSERT_EQ(decoded_footer.metaindex_handle().size(), meta_index.size()); ASSERT_EQ(decoded_footer.metaindex_handle().size(), meta_index.size());
ASSERT_EQ(decoded_footer.index_handle().offset(), index.offset()); ASSERT_EQ(decoded_footer.index_handle().offset(), index.offset());
ASSERT_EQ(decoded_footer.index_handle().size(), index.size()); ASSERT_EQ(decoded_footer.index_handle().size(), index.size());
ASSERT_EQ(decoded_footer.version(), 1U); ASSERT_EQ(decoded_footer.format_version(), 1U);
ASSERT_EQ(decoded_footer.GetBlockTrailerSize(), 0U);
} }
#endif // !ROCKSDB_LITE #endif // !ROCKSDB_LITE
{
// version == 2
std::string encoded;
Footer footer(kBlockBasedTableMagicNumber, 2);
BlockHandle meta_index(10, 5), index(20, 15);
footer.set_metaindex_handle(meta_index);
footer.set_index_handle(index);
footer.EncodeTo(&encoded);
Footer decoded_footer;
Slice encoded_slice(encoded);
ASSERT_OK(decoded_footer.DecodeFrom(&encoded_slice));
ASSERT_EQ(decoded_footer.table_magic_number(), kBlockBasedTableMagicNumber);
ASSERT_EQ(decoded_footer.checksum(), kCRC32c);
ASSERT_EQ(decoded_footer.metaindex_handle().offset(), meta_index.offset());
ASSERT_EQ(decoded_footer.metaindex_handle().size(), meta_index.size());
ASSERT_EQ(decoded_footer.index_handle().offset(), index.offset());
ASSERT_EQ(decoded_footer.index_handle().size(), index.size());
ASSERT_EQ(decoded_footer.version(), 2U);
}
} }
class IndexBlockRestartIntervalTest class IndexBlockRestartIntervalTest
@ -4786,7 +4787,7 @@ TEST_P(BlockBasedTableTest, PropertiesBlockRestartPointTest) {
// -- Read properties block // -- Read properties block
BlockHandle properties_handle; BlockHandle properties_handle;
ASSERT_OK(FindOptionalMetaBlock(meta_iter.get(), kPropertiesBlock, ASSERT_OK(FindOptionalMetaBlock(meta_iter.get(), kPropertiesBlockName,
&properties_handle)); &properties_handle));
ASSERT_FALSE(properties_handle.IsNull()); ASSERT_FALSE(properties_handle.IsNull());
BlockContents properties_contents; BlockContents properties_contents;
@ -4873,7 +4874,7 @@ TEST_P(BlockBasedTableTest, PropertiesMetaBlockLast) {
key_at_max_offset = metaindex_iter->key().ToString(); key_at_max_offset = metaindex_iter->key().ToString();
} }
} }
ASSERT_EQ(kPropertiesBlock, key_at_max_offset); ASSERT_EQ(kPropertiesBlockName, key_at_max_offset);
// index handle is stored in footer rather than metaindex block, so need // index handle is stored in footer rather than metaindex block, so need
// separate logic to verify it comes before properties block. // separate logic to verify it comes before properties block.
ASSERT_GT(max_offset, footer.index_handle().offset()); ASSERT_GT(max_offset, footer.index_handle().offset());
@ -5369,6 +5370,7 @@ TEST_P(
} // namespace ROCKSDB_NAMESPACE } // namespace ROCKSDB_NAMESPACE
int main(int argc, char** argv) { int main(int argc, char** argv) {
ROCKSDB_NAMESPACE::port::InstallStackTraceHandler();
::testing::InitGoogleTest(&argc, argv); ::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS(); return RUN_ALL_TESTS();
} }

7
test_util/testutil.cc
View file

@ -38,7 +38,12 @@ namespace ROCKSDB_NAMESPACE {
namespace test { namespace test {
const uint32_t kDefaultFormatVersion = BlockBasedTableOptions().format_version; const uint32_t kDefaultFormatVersion = BlockBasedTableOptions().format_version;
const uint32_t kLatestFormatVersion = 5u; const std::set<uint32_t> kFooterFormatVersionsToTest{
5U,
// In case any interesting future changes
kDefaultFormatVersion,
kLatestFormatVersion,
};
std::string RandomKey(Random* rnd, int len, RandomKeyType type) { std::string RandomKey(Random* rnd, int len, RandomKeyType type) {
// Make sure to generate a wide variety of characters so we // Make sure to generate a wide variety of characters so we

2
test_util/testutil.h
View file

@ -44,7 +44,7 @@ class SequentialFileReader;
namespace test { namespace test {
extern const uint32_t kDefaultFormatVersion; extern const uint32_t kDefaultFormatVersion;
extern const uint32_t kLatestFormatVersion; extern const std::set<uint32_t> kFooterFormatVersionsToTest;
// Return a random key with the specified length that may contain interesting // Return a random key with the specified length that may contain interesting
// characters (e.g. \x00, \xff, etc.). // characters (e.g. \x00, \xff, etc.).

19
util/cast_util.h
View file

@ -5,6 +5,8 @@
#pragma once #pragma once
#include <type_traits>
#include "rocksdb/rocksdb_namespace.h" #include "rocksdb/rocksdb_namespace.h"
namespace ROCKSDB_NAMESPACE { namespace ROCKSDB_NAMESPACE {
@ -20,4 +22,21 @@ inline DestClass* static_cast_with_check(SrcClass* x) {
#endif #endif
return ret; return ret;
} }
// A wrapper around static_cast for lossless conversion between integral
// types, including enum types. For example, this can be used for converting
// between signed/unsigned or enum type and underlying type without fear of
// stripping away data, now or in the future.
template <typename To, typename From>
inline To lossless_cast(From x) {
using FromValue = typename std::remove_reference<From>::type;
static_assert(
std::is_integral<FromValue>::value || std::is_enum<FromValue>::value,
"Only works on integral types");
static_assert(std::is_integral<To>::value || std::is_enum<To>::value,
"Only works on integral types");
static_assert(sizeof(To) >= sizeof(FromValue), "Must be lossless");
return static_cast<To>(x);
}
} // namespace ROCKSDB_NAMESPACE } // namespace ROCKSDB_NAMESPACE

2
util/coding.h
View file

@ -31,7 +31,7 @@
namespace ROCKSDB_NAMESPACE { namespace ROCKSDB_NAMESPACE {
// The maximum length of a varint in bytes for 64-bit. // The maximum length of a varint in bytes for 64-bit.
const unsigned int kMaxVarint64Length = 10; const uint32_t kMaxVarint64Length = 10;
// Standard Put... routines append to a string // Standard Put... routines append to a string
extern void PutFixed16(std::string* dst, uint16_t value); extern void PutFixed16(std::string* dst, uint16_t value);