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rocksdb/options/cf_options.cc
Maysam Yabandeh 6a40ee5eb1 Refresh snapshot list during long compactions (2nd attempt) (#5278) 
Summary:
Part of compaction cpu goes to processing snapshot list, the larger the list the bigger the overhead. Although the lifetime of most of the snapshots is much shorter than the lifetime of compactions, the compaction conservatively operates on the list of snapshots that it initially obtained. This patch allows the snapshot list to be updated via a callback if the compaction is taking long. This should let the compaction to continue more efficiently with much smaller snapshot list.
For simplicity, to avoid the feature is disabled in two cases: i) When more than one sub-compaction are sharing the same snapshot list, ii) when Range Delete is used in which the range delete aggregator has its own copy of snapshot list.
This fixes the reverted https://github.com/facebook/rocksdb/pull/5099 issue with range deletes.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5278

Differential Revision: D15203291

Pulled By: maysamyabandeh

fbshipit-source-id: fa645611e606aa222c7ce53176dc5bb6f259c258
2019-05-03 17:30:22 -07:00

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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
#include "options/cf_options.h"
#ifndef __STDC_FORMAT_MACROS
#define __STDC_FORMAT_MACROS
#endif
#include <inttypes.h>
#include <cassert>
#include <limits>
#include <string>
#include "options/db_options.h"
#include "port/port.h"
#include "rocksdb/env.h"
#include "rocksdb/options.h"
#include "rocksdb/concurrent_task_limiter.h"
namespace rocksdb {
ImmutableCFOptions::ImmutableCFOptions(const Options& options)
: ImmutableCFOptions(ImmutableDBOptions(options), options) {}
ImmutableCFOptions::ImmutableCFOptions(const ImmutableDBOptions& db_options,
const ColumnFamilyOptions& cf_options)
: compaction_style(cf_options.compaction_style),
compaction_pri(cf_options.compaction_pri),
user_comparator(cf_options.comparator),
internal_comparator(InternalKeyComparator(cf_options.comparator)),
merge_operator(cf_options.merge_operator.get()),
compaction_filter(cf_options.compaction_filter),
compaction_filter_factory(cf_options.compaction_filter_factory.get()),
min_write_buffer_number_to_merge(
cf_options.min_write_buffer_number_to_merge),
max_write_buffer_number_to_maintain(
cf_options.max_write_buffer_number_to_maintain),
inplace_update_support(cf_options.inplace_update_support),
inplace_callback(cf_options.inplace_callback),
info_log(db_options.info_log.get()),
statistics(db_options.statistics.get()),
rate_limiter(db_options.rate_limiter.get()),
info_log_level(db_options.info_log_level),
env(db_options.env),
allow_mmap_reads(db_options.allow_mmap_reads),
allow_mmap_writes(db_options.allow_mmap_writes),
db_paths(db_options.db_paths),
memtable_factory(cf_options.memtable_factory.get()),
table_factory(cf_options.table_factory.get()),
table_properties_collector_factories(
cf_options.table_properties_collector_factories),
advise_random_on_open(db_options.advise_random_on_open),
bloom_locality(cf_options.bloom_locality),
purge_redundant_kvs_while_flush(
cf_options.purge_redundant_kvs_while_flush),
use_fsync(db_options.use_fsync),
compression_per_level(cf_options.compression_per_level),
bottommost_compression(cf_options.bottommost_compression),
bottommost_compression_opts(cf_options.bottommost_compression_opts),
compression_opts(cf_options.compression_opts),
level_compaction_dynamic_level_bytes(
cf_options.level_compaction_dynamic_level_bytes),
access_hint_on_compaction_start(
db_options.access_hint_on_compaction_start),
new_table_reader_for_compaction_inputs(
db_options.new_table_reader_for_compaction_inputs),
num_levels(cf_options.num_levels),
optimize_filters_for_hits(cf_options.optimize_filters_for_hits),
force_consistency_checks(cf_options.force_consistency_checks),
allow_ingest_behind(db_options.allow_ingest_behind),
preserve_deletes(db_options.preserve_deletes),
listeners(db_options.listeners),
row_cache(db_options.row_cache),
max_subcompactions(db_options.max_subcompactions),
memtable_insert_with_hint_prefix_extractor(
cf_options.memtable_insert_with_hint_prefix_extractor.get()),
cf_paths(cf_options.cf_paths),
compaction_thread_limiter(cf_options.compaction_thread_limiter) {}
// Multiple two operands. If they overflow, return op1.
uint64_t MultiplyCheckOverflow(uint64_t op1, double op2) {
if (op1 == 0 || op2 <= 0) {
return 0;
}
if (port::kMaxUint64 / op1 < op2) {
return op1;
}
return static_cast<uint64_t>(op1 * op2);
}
// when level_compaction_dynamic_level_bytes is true and leveled compaction
// is used, the base level is not always L1, so precomupted max_file_size can
// no longer be used. Recompute file_size_for_level from base level.
uint64_t MaxFileSizeForLevel(const MutableCFOptions& cf_options,
int level, CompactionStyle compaction_style, int base_level,
bool level_compaction_dynamic_level_bytes) {
if (!level_compaction_dynamic_level_bytes || level < base_level ||
compaction_style != kCompactionStyleLevel) {
assert(level >= 0);
assert(level < (int)cf_options.max_file_size.size());
return cf_options.max_file_size[level];
} else {
assert(level >= 0 && base_level >= 0);
assert(level - base_level < (int)cf_options.max_file_size.size());
return cf_options.max_file_size[level - base_level];
}
}
void MutableCFOptions::RefreshDerivedOptions(int num_levels,
CompactionStyle compaction_style) {
max_file_size.resize(num_levels);
for (int i = 0; i < num_levels; ++i) {
if (i == 0 && compaction_style == kCompactionStyleUniversal) {
max_file_size[i] = ULLONG_MAX;
} else if (i > 1) {
max_file_size[i] = MultiplyCheckOverflow(max_file_size[i - 1],
target_file_size_multiplier);
} else {
max_file_size[i] = target_file_size_base;
}
}
}
void MutableCFOptions::Dump(Logger* log) const {
// Memtable related options
ROCKS_LOG_INFO(log,
" write_buffer_size: %" ROCKSDB_PRIszt,
write_buffer_size);
ROCKS_LOG_INFO(log, " max_write_buffer_number: %d",
max_write_buffer_number);
ROCKS_LOG_INFO(log,
" arena_block_size: %" ROCKSDB_PRIszt,
arena_block_size);
ROCKS_LOG_INFO(log, " memtable_prefix_bloom_ratio: %f",
memtable_prefix_bloom_size_ratio);
ROCKS_LOG_INFO(log, " memtable_whole_key_filtering: %d",
memtable_whole_key_filtering);
ROCKS_LOG_INFO(log,
" memtable_huge_page_size: %" ROCKSDB_PRIszt,
memtable_huge_page_size);
ROCKS_LOG_INFO(log,
" max_successive_merges: %" ROCKSDB_PRIszt,
max_successive_merges);
ROCKS_LOG_INFO(log,
" inplace_update_num_locks: %" ROCKSDB_PRIszt,
inplace_update_num_locks);
ROCKS_LOG_INFO(
log, " prefix_extractor: %s",
prefix_extractor == nullptr ? "nullptr" : prefix_extractor->Name());
ROCKS_LOG_INFO(log, " disable_auto_compactions: %d",
disable_auto_compactions);
ROCKS_LOG_INFO(log, " soft_pending_compaction_bytes_limit: %" PRIu64,
soft_pending_compaction_bytes_limit);
ROCKS_LOG_INFO(log, " hard_pending_compaction_bytes_limit: %" PRIu64,
hard_pending_compaction_bytes_limit);
ROCKS_LOG_INFO(log, " level0_file_num_compaction_trigger: %d",
level0_file_num_compaction_trigger);
ROCKS_LOG_INFO(log, " level0_slowdown_writes_trigger: %d",
level0_slowdown_writes_trigger);
ROCKS_LOG_INFO(log, " level0_stop_writes_trigger: %d",
level0_stop_writes_trigger);
ROCKS_LOG_INFO(log, " max_compaction_bytes: %" PRIu64,
max_compaction_bytes);
ROCKS_LOG_INFO(log, " target_file_size_base: %" PRIu64,
target_file_size_base);
ROCKS_LOG_INFO(log, " target_file_size_multiplier: %d",
target_file_size_multiplier);
ROCKS_LOG_INFO(log, " max_bytes_for_level_base: %" PRIu64,
max_bytes_for_level_base);
ROCKS_LOG_INFO(log, " snap_refresh_nanos: %" PRIu64,
snap_refresh_nanos);
ROCKS_LOG_INFO(log, " max_bytes_for_level_multiplier: %f",
max_bytes_for_level_multiplier);
ROCKS_LOG_INFO(log, " ttl: %" PRIu64,
ttl);
ROCKS_LOG_INFO(log, " periodic_compaction_seconds: %" PRIu64,
periodic_compaction_seconds);
std::string result;
char buf[10];
for (const auto m : max_bytes_for_level_multiplier_additional) {
snprintf(buf, sizeof(buf), "%d, ", m);
result += buf;
}
if (result.size() >= 2) {
result.resize(result.size() - 2);
} else {
result = "";
}
ROCKS_LOG_INFO(log, "max_bytes_for_level_multiplier_additional: %s",
result.c_str());
ROCKS_LOG_INFO(log, " max_sequential_skip_in_iterations: %" PRIu64,
max_sequential_skip_in_iterations);
ROCKS_LOG_INFO(log, " paranoid_file_checks: %d",
paranoid_file_checks);
ROCKS_LOG_INFO(log, " report_bg_io_stats: %d",
report_bg_io_stats);
ROCKS_LOG_INFO(log, " compression: %d",
static_cast<int>(compression));
// Universal Compaction Options
ROCKS_LOG_INFO(log, "compaction_options_universal.size_ratio : %d",
compaction_options_universal.size_ratio);
ROCKS_LOG_INFO(log, "compaction_options_universal.min_merge_width : %d",
compaction_options_universal.min_merge_width);
ROCKS_LOG_INFO(log, "compaction_options_universal.max_merge_width : %d",
compaction_options_universal.max_merge_width);
ROCKS_LOG_INFO(
log, "compaction_options_universal.max_size_amplification_percent : %d",
compaction_options_universal.max_size_amplification_percent);
ROCKS_LOG_INFO(log,
"compaction_options_universal.compression_size_percent : %d",
compaction_options_universal.compression_size_percent);
ROCKS_LOG_INFO(log, "compaction_options_universal.stop_style : %d",
compaction_options_universal.stop_style);
ROCKS_LOG_INFO(
log, "compaction_options_universal.allow_trivial_move : %d",
static_cast<int>(compaction_options_universal.allow_trivial_move));
// FIFO Compaction Options
ROCKS_LOG_INFO(log, "compaction_options_fifo.max_table_files_size : %" PRIu64,
compaction_options_fifo.max_table_files_size);
ROCKS_LOG_INFO(log, "compaction_options_fifo.allow_compaction : %d",
compaction_options_fifo.allow_compaction);
}
MutableCFOptions::MutableCFOptions(const Options& options)
: MutableCFOptions(ColumnFamilyOptions(options)) {}
} // namespace rocksdb
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