mirror of
https://github.com/facebook/rocksdb.git
synced 2024-11-27 02:44:18 +00:00
91f3c90792
Summary: This diff fixes a case when the forward iterator misses a new insert when the mutable iterator is not current. The test is also improved and the check for deleted iterators is made more informative. Test Plan: DBTailingIteratorTest.*Trim Reviewers: tnovak, sdong Reviewed By: sdong Subscribers: dhruba Differential Revision: https://reviews.facebook.net/D46167
660 lines
20 KiB
C++
660 lines
20 KiB
C++
// Copyright (c) 2013, Facebook, Inc. All rights reserved.
|
|
// This source code is licensed under the BSD-style license found in the
|
|
// LICENSE file in the root directory of this source tree. An additional grant
|
|
// of patent rights can be found in the PATENTS file in the same directory.
|
|
//
|
|
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file. See the AUTHORS file for names of contributors.
|
|
|
|
// Introduction of SyncPoint effectively disabled building and running this test
|
|
// in Release build.
|
|
// which is a pity, it is a good test
|
|
#if !(defined NDEBUG) || !defined(OS_WIN)
|
|
|
|
#include "db/forward_iterator.h"
|
|
#include "port/stack_trace.h"
|
|
#include "util/db_test_util.h"
|
|
|
|
namespace rocksdb {
|
|
|
|
class DBTestTailingIterator : public DBTestBase {
|
|
public:
|
|
DBTestTailingIterator() : DBTestBase("/db_tailing_iterator_test") {}
|
|
};
|
|
|
|
TEST_F(DBTestTailingIterator, TailingIteratorSingle) {
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options));
|
|
iter->SeekToFirst();
|
|
ASSERT_TRUE(!iter->Valid());
|
|
|
|
// add a record and check that iter can see it
|
|
ASSERT_OK(db_->Put(WriteOptions(), "mirko", "fodor"));
|
|
iter->SeekToFirst();
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().ToString(), "mirko");
|
|
|
|
iter->Next();
|
|
ASSERT_TRUE(!iter->Valid());
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, TailingIteratorKeepAdding) {
|
|
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options, handles_[1]));
|
|
std::string value(1024, 'a');
|
|
|
|
const int num_records = 10000;
|
|
for (int i = 0; i < num_records; ++i) {
|
|
char buf[32];
|
|
snprintf(buf, sizeof(buf), "%016d", i);
|
|
|
|
Slice key(buf, 16);
|
|
ASSERT_OK(Put(1, key, value));
|
|
|
|
iter->Seek(key);
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().compare(key), 0);
|
|
}
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, TailingIteratorSeekToNext) {
|
|
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options, handles_[1]));
|
|
std::unique_ptr<Iterator> itern(db_->NewIterator(read_options, handles_[1]));
|
|
std::string value(1024, 'a');
|
|
|
|
const int num_records = 1000;
|
|
for (int i = 1; i < num_records; ++i) {
|
|
char buf1[32];
|
|
char buf2[32];
|
|
snprintf(buf1, sizeof(buf1), "00a0%016d", i * 5);
|
|
|
|
Slice key(buf1, 20);
|
|
ASSERT_OK(Put(1, key, value));
|
|
|
|
if (i % 100 == 99) {
|
|
ASSERT_OK(Flush(1));
|
|
}
|
|
|
|
snprintf(buf2, sizeof(buf2), "00a0%016d", i * 5 - 2);
|
|
Slice target(buf2, 20);
|
|
iter->Seek(target);
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().compare(key), 0);
|
|
if (i == 1) {
|
|
itern->SeekToFirst();
|
|
} else {
|
|
itern->Next();
|
|
}
|
|
ASSERT_TRUE(itern->Valid());
|
|
ASSERT_EQ(itern->key().compare(key), 0);
|
|
}
|
|
rocksdb::SyncPoint::GetInstance()->ClearAllCallBacks();
|
|
rocksdb::SyncPoint::GetInstance()->DisableProcessing();
|
|
for (int i = 2 * num_records; i > 0; --i) {
|
|
char buf1[32];
|
|
char buf2[32];
|
|
snprintf(buf1, sizeof(buf1), "00a0%016d", i * 5);
|
|
|
|
Slice key(buf1, 20);
|
|
ASSERT_OK(Put(1, key, value));
|
|
|
|
if (i % 100 == 99) {
|
|
ASSERT_OK(Flush(1));
|
|
}
|
|
|
|
snprintf(buf2, sizeof(buf2), "00a0%016d", i * 5 - 2);
|
|
Slice target(buf2, 20);
|
|
iter->Seek(target);
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().compare(key), 0);
|
|
}
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, TailingIteratorTrimSeekToNext) {
|
|
const uint64_t k150KB = 150 * 1024;
|
|
Options options;
|
|
options.write_buffer_size = k150KB;
|
|
options.max_write_buffer_number = 3;
|
|
options.min_write_buffer_number_to_merge = 2;
|
|
CreateAndReopenWithCF({"pikachu"}, options);
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
int num_iters, deleted_iters;
|
|
|
|
char bufe[32];
|
|
snprintf(bufe, sizeof(bufe), "00b0%016d", 0);
|
|
Slice keyu(bufe, 20);
|
|
read_options.iterate_upper_bound = &keyu;
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options, handles_[1]));
|
|
std::unique_ptr<Iterator> itern(db_->NewIterator(read_options, handles_[1]));
|
|
std::unique_ptr<Iterator> iterh(db_->NewIterator(read_options, handles_[1]));
|
|
std::string value(1024, 'a');
|
|
bool file_iters_deleted = false;
|
|
rocksdb::SyncPoint::GetInstance()->SetCallBack(
|
|
"ForwardIterator::SeekInternal:Return", [&](void* arg) {
|
|
ForwardIterator* fiter = reinterpret_cast<ForwardIterator*>(arg);
|
|
ASSERT_TRUE(!file_iters_deleted ||
|
|
fiter->TEST_CheckDeletedIters(&deleted_iters, &num_iters));
|
|
});
|
|
rocksdb::SyncPoint::GetInstance()->SetCallBack(
|
|
"ForwardIterator::Next:Return", [&](void* arg) {
|
|
ForwardIterator* fiter = reinterpret_cast<ForwardIterator*>(arg);
|
|
ASSERT_TRUE(!file_iters_deleted ||
|
|
fiter->TEST_CheckDeletedIters(&deleted_iters, &num_iters));
|
|
});
|
|
rocksdb::SyncPoint::GetInstance()->EnableProcessing();
|
|
const int num_records = 1000;
|
|
for (int i = 1; i < num_records; ++i) {
|
|
char buf1[32];
|
|
char buf2[32];
|
|
char buf3[32];
|
|
char buf4[32];
|
|
snprintf(buf1, sizeof(buf1), "00a0%016d", i * 5);
|
|
snprintf(buf3, sizeof(buf1), "00b0%016d", i * 5);
|
|
|
|
Slice key(buf1, 20);
|
|
ASSERT_OK(Put(1, key, value));
|
|
Slice keyn(buf3, 20);
|
|
ASSERT_OK(Put(1, keyn, value));
|
|
|
|
if (i % 100 == 99) {
|
|
ASSERT_OK(Flush(1));
|
|
dbfull()->TEST_WaitForCompact();
|
|
if (i == 299) {
|
|
file_iters_deleted = true;
|
|
}
|
|
snprintf(buf4, sizeof(buf1), "00a0%016d", i * 5 / 2);
|
|
Slice target(buf4, 20);
|
|
iterh->Seek(target);
|
|
ASSERT_TRUE(iter->Valid());
|
|
for (int j = (i + 1) * 5 / 2; j < i * 5; j += 5) {
|
|
iterh->Next();
|
|
ASSERT_TRUE(iterh->Valid());
|
|
}
|
|
if (i == 299) {
|
|
file_iters_deleted = false;
|
|
}
|
|
}
|
|
|
|
file_iters_deleted = true;
|
|
snprintf(buf2, sizeof(buf2), "00a0%016d", i * 5 - 2);
|
|
Slice target(buf2, 20);
|
|
iter->Seek(target);
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().compare(key), 0);
|
|
ASSERT_LE(num_iters, 1);
|
|
if (i == 1) {
|
|
itern->SeekToFirst();
|
|
} else {
|
|
itern->Next();
|
|
}
|
|
ASSERT_TRUE(itern->Valid());
|
|
ASSERT_EQ(itern->key().compare(key), 0);
|
|
ASSERT_LE(num_iters, 1);
|
|
file_iters_deleted = false;
|
|
}
|
|
iter = 0;
|
|
itern = 0;
|
|
iterh = 0;
|
|
BlockBasedTableOptions table_options;
|
|
table_options.no_block_cache = true;
|
|
table_options.block_cache_compressed = nullptr;
|
|
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
|
|
ReopenWithColumnFamilies({"default", "pikachu"}, options);
|
|
read_options.read_tier = kBlockCacheTier;
|
|
std::unique_ptr<Iterator> iteri(db_->NewIterator(read_options, handles_[1]));
|
|
char buf5[32];
|
|
snprintf(buf5, sizeof(buf5), "00a0%016d", (num_records / 2) * 5 - 2);
|
|
Slice target1(buf5, 20);
|
|
iteri->Seek(target1);
|
|
ASSERT_TRUE(iteri->status().IsIncomplete());
|
|
iteri = 0;
|
|
|
|
read_options.read_tier = kReadAllTier;
|
|
options.table_factory.reset(NewBlockBasedTableFactory());
|
|
ReopenWithColumnFamilies({"default", "pikachu"}, options);
|
|
iter.reset(db_->NewIterator(read_options, handles_[1]));
|
|
for (int i = 2 * num_records; i > 0; --i) {
|
|
char buf1[32];
|
|
char buf2[32];
|
|
snprintf(buf1, sizeof(buf1), "00a0%016d", i * 5);
|
|
|
|
Slice key(buf1, 20);
|
|
ASSERT_OK(Put(1, key, value));
|
|
|
|
if (i % 100 == 99) {
|
|
ASSERT_OK(Flush(1));
|
|
}
|
|
|
|
snprintf(buf2, sizeof(buf2), "00a0%016d", i * 5 - 2);
|
|
Slice target(buf2, 20);
|
|
iter->Seek(target);
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().compare(key), 0);
|
|
}
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, TailingIteratorDeletes) {
|
|
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options, handles_[1]));
|
|
|
|
// write a single record, read it using the iterator, then delete it
|
|
ASSERT_OK(Put(1, "0test", "test"));
|
|
iter->SeekToFirst();
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().ToString(), "0test");
|
|
ASSERT_OK(Delete(1, "0test"));
|
|
|
|
// write many more records
|
|
const int num_records = 10000;
|
|
std::string value(1024, 'A');
|
|
|
|
for (int i = 0; i < num_records; ++i) {
|
|
char buf[32];
|
|
snprintf(buf, sizeof(buf), "1%015d", i);
|
|
|
|
Slice key(buf, 16);
|
|
ASSERT_OK(Put(1, key, value));
|
|
}
|
|
|
|
// force a flush to make sure that no records are read from memtable
|
|
ASSERT_OK(Flush(1));
|
|
|
|
// skip "0test"
|
|
iter->Next();
|
|
|
|
// make sure we can read all new records using the existing iterator
|
|
int count = 0;
|
|
for (; iter->Valid(); iter->Next(), ++count) ;
|
|
|
|
ASSERT_EQ(count, num_records);
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, TailingIteratorPrefixSeek) {
|
|
XFUNC_TEST("", "dbtest_prefix", prefix_skip1, XFuncPoint::SetSkip,
|
|
kSkipNoPrefix);
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
|
|
Options options = CurrentOptions();
|
|
options.env = env_;
|
|
options.create_if_missing = true;
|
|
options.disable_auto_compactions = true;
|
|
options.prefix_extractor.reset(NewFixedPrefixTransform(2));
|
|
options.memtable_factory.reset(NewHashSkipListRepFactory(16));
|
|
DestroyAndReopen(options);
|
|
CreateAndReopenWithCF({"pikachu"}, options);
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options, handles_[1]));
|
|
ASSERT_OK(Put(1, "0101", "test"));
|
|
|
|
ASSERT_OK(Flush(1));
|
|
|
|
ASSERT_OK(Put(1, "0202", "test"));
|
|
|
|
// Seek(0102) shouldn't find any records since 0202 has a different prefix
|
|
iter->Seek("0102");
|
|
ASSERT_TRUE(!iter->Valid());
|
|
|
|
iter->Seek("0202");
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().ToString(), "0202");
|
|
|
|
iter->Next();
|
|
ASSERT_TRUE(!iter->Valid());
|
|
XFUNC_TEST("", "dbtest_prefix", prefix_skip1, XFuncPoint::SetSkip, 0);
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, TailingIteratorIncomplete) {
|
|
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
read_options.read_tier = kBlockCacheTier;
|
|
|
|
std::string key("key");
|
|
std::string value("value");
|
|
|
|
ASSERT_OK(db_->Put(WriteOptions(), key, value));
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options));
|
|
iter->SeekToFirst();
|
|
// we either see the entry or it's not in cache
|
|
ASSERT_TRUE(iter->Valid() || iter->status().IsIncomplete());
|
|
|
|
ASSERT_OK(db_->CompactRange(CompactRangeOptions(), nullptr, nullptr));
|
|
iter->SeekToFirst();
|
|
// should still be true after compaction
|
|
ASSERT_TRUE(iter->Valid() || iter->status().IsIncomplete());
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, TailingIteratorSeekToSame) {
|
|
Options options = CurrentOptions();
|
|
options.compaction_style = kCompactionStyleUniversal;
|
|
options.write_buffer_size = 1000;
|
|
CreateAndReopenWithCF({"pikachu"}, options);
|
|
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
|
|
const int NROWS = 10000;
|
|
// Write rows with keys 00000, 00002, 00004 etc.
|
|
for (int i = 0; i < NROWS; ++i) {
|
|
char buf[100];
|
|
snprintf(buf, sizeof(buf), "%05d", 2*i);
|
|
std::string key(buf);
|
|
std::string value("value");
|
|
ASSERT_OK(db_->Put(WriteOptions(), key, value));
|
|
}
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options));
|
|
// Seek to 00001. We expect to find 00002.
|
|
std::string start_key = "00001";
|
|
iter->Seek(start_key);
|
|
ASSERT_TRUE(iter->Valid());
|
|
|
|
std::string found = iter->key().ToString();
|
|
ASSERT_EQ("00002", found);
|
|
|
|
// Now seek to the same key. The iterator should remain in the same
|
|
// position.
|
|
iter->Seek(found);
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(found, iter->key().ToString());
|
|
}
|
|
|
|
// Sets iterate_upper_bound and verifies that ForwardIterator doesn't call
|
|
// Seek() on immutable iterators when target key is >= prev_key and all
|
|
// iterators, including the memtable iterator, are over the upper bound.
|
|
TEST_F(DBTestTailingIterator, TailingIteratorUpperBound) {
|
|
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
|
|
|
|
const Slice upper_bound("20", 3);
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
read_options.iterate_upper_bound = &upper_bound;
|
|
|
|
ASSERT_OK(Put(1, "11", "11"));
|
|
ASSERT_OK(Put(1, "12", "12"));
|
|
ASSERT_OK(Put(1, "22", "22"));
|
|
ASSERT_OK(Flush(1)); // flush all those keys to an immutable SST file
|
|
|
|
// Add another key to the memtable.
|
|
ASSERT_OK(Put(1, "21", "21"));
|
|
|
|
std::unique_ptr<Iterator> it(db_->NewIterator(read_options, handles_[1]));
|
|
it->Seek("12");
|
|
ASSERT_TRUE(it->Valid());
|
|
ASSERT_EQ("12", it->key().ToString());
|
|
|
|
it->Next();
|
|
// Not valid since "21" is over the upper bound.
|
|
ASSERT_FALSE(it->Valid());
|
|
|
|
// This keeps track of the number of times NeedToSeekImmutable() was true.
|
|
int immutable_seeks = 0;
|
|
rocksdb::SyncPoint::GetInstance()->SetCallBack(
|
|
"ForwardIterator::SeekInternal:Immutable",
|
|
[&](void* arg) { ++immutable_seeks; });
|
|
|
|
// Seek to 13. This should not require any immutable seeks.
|
|
rocksdb::SyncPoint::GetInstance()->EnableProcessing();
|
|
it->Seek("13");
|
|
rocksdb::SyncPoint::GetInstance()->DisableProcessing();
|
|
|
|
ASSERT_FALSE(it->Valid());
|
|
ASSERT_EQ(0, immutable_seeks);
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, ManagedTailingIteratorSingle) {
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
read_options.managed = true;
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options));
|
|
iter->SeekToFirst();
|
|
ASSERT_TRUE(!iter->Valid());
|
|
|
|
// add a record and check that iter can see it
|
|
ASSERT_OK(db_->Put(WriteOptions(), "mirko", "fodor"));
|
|
iter->SeekToFirst();
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().ToString(), "mirko");
|
|
|
|
iter->Next();
|
|
ASSERT_TRUE(!iter->Valid());
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, ManagedTailingIteratorKeepAdding) {
|
|
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
read_options.managed = true;
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options, handles_[1]));
|
|
std::string value(1024, 'a');
|
|
|
|
const int num_records = 10000;
|
|
for (int i = 0; i < num_records; ++i) {
|
|
char buf[32];
|
|
snprintf(buf, sizeof(buf), "%016d", i);
|
|
|
|
Slice key(buf, 16);
|
|
ASSERT_OK(Put(1, key, value));
|
|
|
|
iter->Seek(key);
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().compare(key), 0);
|
|
}
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, ManagedTailingIteratorSeekToNext) {
|
|
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
read_options.managed = true;
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options, handles_[1]));
|
|
std::string value(1024, 'a');
|
|
|
|
const int num_records = 1000;
|
|
for (int i = 1; i < num_records; ++i) {
|
|
char buf1[32];
|
|
char buf2[32];
|
|
snprintf(buf1, sizeof(buf1), "00a0%016d", i * 5);
|
|
|
|
Slice key(buf1, 20);
|
|
ASSERT_OK(Put(1, key, value));
|
|
|
|
if (i % 100 == 99) {
|
|
ASSERT_OK(Flush(1));
|
|
}
|
|
|
|
snprintf(buf2, sizeof(buf2), "00a0%016d", i * 5 - 2);
|
|
Slice target(buf2, 20);
|
|
iter->Seek(target);
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().compare(key), 0);
|
|
}
|
|
for (int i = 2 * num_records; i > 0; --i) {
|
|
char buf1[32];
|
|
char buf2[32];
|
|
snprintf(buf1, sizeof(buf1), "00a0%016d", i * 5);
|
|
|
|
Slice key(buf1, 20);
|
|
ASSERT_OK(Put(1, key, value));
|
|
|
|
if (i % 100 == 99) {
|
|
ASSERT_OK(Flush(1));
|
|
}
|
|
|
|
snprintf(buf2, sizeof(buf2), "00a0%016d", i * 5 - 2);
|
|
Slice target(buf2, 20);
|
|
iter->Seek(target);
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().compare(key), 0);
|
|
}
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, ManagedTailingIteratorDeletes) {
|
|
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
read_options.managed = true;
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options, handles_[1]));
|
|
|
|
// write a single record, read it using the iterator, then delete it
|
|
ASSERT_OK(Put(1, "0test", "test"));
|
|
iter->SeekToFirst();
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().ToString(), "0test");
|
|
ASSERT_OK(Delete(1, "0test"));
|
|
|
|
// write many more records
|
|
const int num_records = 10000;
|
|
std::string value(1024, 'A');
|
|
|
|
for (int i = 0; i < num_records; ++i) {
|
|
char buf[32];
|
|
snprintf(buf, sizeof(buf), "1%015d", i);
|
|
|
|
Slice key(buf, 16);
|
|
ASSERT_OK(Put(1, key, value));
|
|
}
|
|
|
|
// force a flush to make sure that no records are read from memtable
|
|
ASSERT_OK(Flush(1));
|
|
|
|
// skip "0test"
|
|
iter->Next();
|
|
|
|
// make sure we can read all new records using the existing iterator
|
|
int count = 0;
|
|
for (; iter->Valid(); iter->Next(), ++count) {
|
|
}
|
|
|
|
ASSERT_EQ(count, num_records);
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, ManagedTailingIteratorPrefixSeek) {
|
|
XFUNC_TEST("", "dbtest_prefix", prefix_skip1, XFuncPoint::SetSkip,
|
|
kSkipNoPrefix);
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
read_options.managed = true;
|
|
|
|
Options options = CurrentOptions();
|
|
options.env = env_;
|
|
options.create_if_missing = true;
|
|
options.disable_auto_compactions = true;
|
|
options.prefix_extractor.reset(NewFixedPrefixTransform(2));
|
|
options.memtable_factory.reset(NewHashSkipListRepFactory(16));
|
|
DestroyAndReopen(options);
|
|
CreateAndReopenWithCF({"pikachu"}, options);
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options, handles_[1]));
|
|
ASSERT_OK(Put(1, "0101", "test"));
|
|
|
|
ASSERT_OK(Flush(1));
|
|
|
|
ASSERT_OK(Put(1, "0202", "test"));
|
|
|
|
// Seek(0102) shouldn't find any records since 0202 has a different prefix
|
|
iter->Seek("0102");
|
|
ASSERT_TRUE(!iter->Valid());
|
|
|
|
iter->Seek("0202");
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().ToString(), "0202");
|
|
|
|
iter->Next();
|
|
ASSERT_TRUE(!iter->Valid());
|
|
XFUNC_TEST("", "dbtest_prefix", prefix_skip1, XFuncPoint::SetSkip, 0);
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, ManagedTailingIteratorIncomplete) {
|
|
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
read_options.managed = true;
|
|
read_options.read_tier = kBlockCacheTier;
|
|
|
|
std::string key = "key";
|
|
std::string value = "value";
|
|
|
|
ASSERT_OK(db_->Put(WriteOptions(), key, value));
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options));
|
|
iter->SeekToFirst();
|
|
// we either see the entry or it's not in cache
|
|
ASSERT_TRUE(iter->Valid() || iter->status().IsIncomplete());
|
|
|
|
ASSERT_OK(db_->CompactRange(CompactRangeOptions(), nullptr, nullptr));
|
|
iter->SeekToFirst();
|
|
// should still be true after compaction
|
|
ASSERT_TRUE(iter->Valid() || iter->status().IsIncomplete());
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, ManagedTailingIteratorSeekToSame) {
|
|
Options options = CurrentOptions();
|
|
options.compaction_style = kCompactionStyleUniversal;
|
|
options.write_buffer_size = 1000;
|
|
CreateAndReopenWithCF({"pikachu"}, options);
|
|
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
read_options.managed = true;
|
|
|
|
const int NROWS = 10000;
|
|
// Write rows with keys 00000, 00002, 00004 etc.
|
|
for (int i = 0; i < NROWS; ++i) {
|
|
char buf[100];
|
|
snprintf(buf, sizeof(buf), "%05d", 2 * i);
|
|
std::string key(buf);
|
|
std::string value("value");
|
|
ASSERT_OK(db_->Put(WriteOptions(), key, value));
|
|
}
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options));
|
|
// Seek to 00001. We expect to find 00002.
|
|
std::string start_key = "00001";
|
|
iter->Seek(start_key);
|
|
ASSERT_TRUE(iter->Valid());
|
|
|
|
std::string found = iter->key().ToString();
|
|
ASSERT_EQ("00002", found);
|
|
|
|
// Now seek to the same key. The iterator should remain in the same
|
|
// position.
|
|
iter->Seek(found);
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(found, iter->key().ToString());
|
|
}
|
|
|
|
} // namespace rocksdb
|
|
|
|
#endif // !(defined NDEBUG) || !defined(OS_WIN)
|
|
|
|
int main(int argc, char** argv) {
|
|
#if !(defined NDEBUG) || !defined(OS_WIN)
|
|
rocksdb::port::InstallStackTraceHandler();
|
|
::testing::InitGoogleTest(&argc, argv);
|
|
return RUN_ALL_TESTS();
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|