mirror of
https://github.com/facebook/rocksdb.git
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40a2e406f8
Summary: Changed BuildTable() (used for flush) to (1) add range tombstones to the aggregator, which is used by CompactionIterator to determine which keys can be removed; and (2) add aggregator's range tombstones to the table that is output for the flush. Closes https://github.com/facebook/rocksdb/pull/1438 Differential Revision: D4100025 Pulled By: ajkr fbshipit-source-id: cb01a70
217 lines
8 KiB
C++
217 lines
8 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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//
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// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file. See the AUTHORS file for names of contributors.
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#include "db/builder.h"
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#include <algorithm>
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#include <deque>
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#include <vector>
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#include "db/compaction_iterator.h"
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#include "db/dbformat.h"
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#include "db/event_helpers.h"
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#include "db/filename.h"
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#include "db/internal_stats.h"
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#include "db/merge_helper.h"
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#include "db/table_cache.h"
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#include "db/version_edit.h"
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#include "rocksdb/db.h"
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#include "rocksdb/env.h"
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#include "rocksdb/iterator.h"
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#include "rocksdb/options.h"
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#include "rocksdb/table.h"
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#include "table/block_based_table_builder.h"
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#include "table/internal_iterator.h"
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#include "util/file_reader_writer.h"
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#include "util/iostats_context_imp.h"
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#include "util/stop_watch.h"
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#include "util/thread_status_util.h"
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namespace rocksdb {
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class TableFactory;
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TableBuilder* NewTableBuilder(
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const ImmutableCFOptions& ioptions,
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const InternalKeyComparator& internal_comparator,
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const std::vector<std::unique_ptr<IntTblPropCollectorFactory>>*
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int_tbl_prop_collector_factories,
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uint32_t column_family_id, const std::string& column_family_name,
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WritableFileWriter* file, const CompressionType compression_type,
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const CompressionOptions& compression_opts,
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int level,
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const std::string* compression_dict, const bool skip_filters) {
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assert((column_family_id ==
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TablePropertiesCollectorFactory::Context::kUnknownColumnFamily) ==
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column_family_name.empty());
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return ioptions.table_factory->NewTableBuilder(
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TableBuilderOptions(ioptions, internal_comparator,
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int_tbl_prop_collector_factories, compression_type,
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compression_opts, compression_dict, skip_filters,
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column_family_name, level),
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column_family_id, file);
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}
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Status BuildTable(
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const std::string& dbname, Env* env, const ImmutableCFOptions& ioptions,
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const MutableCFOptions& mutable_cf_options, const EnvOptions& env_options,
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TableCache* table_cache, InternalIterator* iter,
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ScopedArenaIterator&& range_del_iter, FileMetaData* meta,
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const InternalKeyComparator& internal_comparator,
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const std::vector<std::unique_ptr<IntTblPropCollectorFactory>>*
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int_tbl_prop_collector_factories,
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uint32_t column_family_id, const std::string& column_family_name,
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std::vector<SequenceNumber> snapshots,
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SequenceNumber earliest_write_conflict_snapshot,
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const CompressionType compression,
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const CompressionOptions& compression_opts, bool paranoid_file_checks,
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InternalStats* internal_stats, TableFileCreationReason reason,
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EventLogger* event_logger, int job_id, const Env::IOPriority io_priority,
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TableProperties* table_properties, int level) {
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assert((column_family_id ==
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TablePropertiesCollectorFactory::Context::kUnknownColumnFamily) ==
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column_family_name.empty());
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// Reports the IOStats for flush for every following bytes.
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const size_t kReportFlushIOStatsEvery = 1048576;
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Status s;
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meta->fd.file_size = 0;
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iter->SeekToFirst();
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range_del_iter->SeekToFirst();
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std::unique_ptr<RangeDelAggregator> range_del_agg(
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new RangeDelAggregator(internal_comparator, snapshots));
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s = range_del_agg->AddTombstones(std::move(range_del_iter));
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if (!s.ok()) {
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// may be non-ok if a range tombstone key is unparsable
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return s;
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}
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std::string fname = TableFileName(ioptions.db_paths, meta->fd.GetNumber(),
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meta->fd.GetPathId());
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#ifndef ROCKSDB_LITE
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EventHelpers::NotifyTableFileCreationStarted(
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ioptions.listeners, dbname, column_family_name, fname, job_id, reason);
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#endif // !ROCKSDB_LITE
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TableProperties tp;
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if (iter->Valid() || range_del_agg->ShouldAddTombstones()) {
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TableBuilder* builder;
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unique_ptr<WritableFileWriter> file_writer;
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{
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unique_ptr<WritableFile> file;
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s = NewWritableFile(env, fname, &file, env_options);
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if (!s.ok()) {
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EventHelpers::LogAndNotifyTableFileCreationFinished(
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event_logger, ioptions.listeners, dbname, column_family_name, fname,
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job_id, meta->fd, tp, reason, s);
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return s;
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}
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file->SetIOPriority(io_priority);
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file_writer.reset(new WritableFileWriter(std::move(file), env_options));
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builder = NewTableBuilder(
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ioptions, internal_comparator, int_tbl_prop_collector_factories,
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column_family_id, column_family_name, file_writer.get(), compression,
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compression_opts, level);
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}
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MergeHelper merge(env, internal_comparator.user_comparator(),
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ioptions.merge_operator, nullptr, ioptions.info_log,
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mutable_cf_options.min_partial_merge_operands,
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true /* internal key corruption is not ok */,
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snapshots.empty() ? 0 : snapshots.back());
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CompactionIterator c_iter(
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iter, internal_comparator.user_comparator(), &merge, kMaxSequenceNumber,
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&snapshots, earliest_write_conflict_snapshot, env,
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true /* internal key corruption is not ok */, range_del_agg.get());
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c_iter.SeekToFirst();
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for (; c_iter.Valid(); c_iter.Next()) {
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const Slice& key = c_iter.key();
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const Slice& value = c_iter.value();
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builder->Add(key, value);
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meta->UpdateBoundaries(key, c_iter.ikey().sequence);
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// TODO(noetzli): Update stats after flush, too.
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if (io_priority == Env::IO_HIGH &&
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IOSTATS(bytes_written) >= kReportFlushIOStatsEvery) {
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ThreadStatusUtil::SetThreadOperationProperty(
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ThreadStatus::FLUSH_BYTES_WRITTEN, IOSTATS(bytes_written));
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}
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}
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// nullptr for table_{min,max} so all range tombstones will be flushed
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range_del_agg->AddToBuilder(builder, true /* extend_before_min_key */,
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nullptr /* next_table_min_key*/, meta);
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// Finish and check for builder errors
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bool empty = builder->NumEntries() == 0;
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s = c_iter.status();
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if (!s.ok() || empty) {
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builder->Abandon();
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} else {
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s = builder->Finish();
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}
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if (s.ok() && !empty) {
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uint64_t file_size = builder->FileSize();
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meta->fd.file_size = file_size;
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meta->marked_for_compaction = builder->NeedCompact();
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assert(meta->fd.GetFileSize() > 0);
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tp = builder->GetTableProperties();
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if (table_properties) {
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*table_properties = tp;
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}
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}
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delete builder;
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// Finish and check for file errors
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if (s.ok() && !empty && !ioptions.disable_data_sync) {
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StopWatch sw(env, ioptions.statistics, TABLE_SYNC_MICROS);
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file_writer->Sync(ioptions.use_fsync);
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}
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if (s.ok() && !empty) {
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s = file_writer->Close();
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}
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if (s.ok() && !empty) {
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// Verify that the table is usable
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std::unique_ptr<InternalIterator> it(table_cache->NewIterator(
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ReadOptions(), env_options, internal_comparator, meta->fd, nullptr,
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(internal_stats == nullptr) ? nullptr
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: internal_stats->GetFileReadHist(0),
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false /* for_compaction */, nullptr /* arena */,
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false /* skip_filter */, level));
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s = it->status();
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if (s.ok() && paranoid_file_checks) {
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for (it->SeekToFirst(); it->Valid(); it->Next()) {
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}
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s = it->status();
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}
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}
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}
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// Check for input iterator errors
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if (!iter->status().ok()) {
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s = iter->status();
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}
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if (!s.ok() || meta->fd.GetFileSize() == 0) {
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env->DeleteFile(fname);
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}
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// Output to event logger and fire events.
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EventHelpers::LogAndNotifyTableFileCreationFinished(
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event_logger, ioptions.listeners, dbname, column_family_name, fname,
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job_id, meta->fd, tp, reason, s);
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return s;
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}
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} // namespace rocksdb
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