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Fix OptimizeForPointLookup() 

Summary:
If users directly call OptimizeForPointLookup(), it is broken as the option isn't compatible with parallel memtable insert. Fix it by using memtable bloomo filter instead.
Closes https://github.com/facebook/rocksdb/pull/1791

Differential Revision: D4442836

Pulled By: siying

fbshipit-source-id: bf6c9cd
This commit is contained in:
Siying Dong 2017-01-20 10:43:59 -08:00 committed by Facebook Github Bot
parent e840213d6e
commit 0e8dfd6062
2 changed files with 13 additions and 1 deletions
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12
db/db_test2.cc
View File

@ -2216,6 +2216,18 @@ TEST_F(DBTest2, ManualCompactionOverlapManualCompaction) {
rocksdb::SyncPoint::GetInstance()->DisableProcessing();
}
TEST_F(DBTest2, OptimizeForPointLookup) {
Options options = CurrentOptions();
Close();
options.OptimizeForPointLookup(2);
ASSERT_OK(DB::Open(options, dbname_, &db_));
ASSERT_OK(Put("foo", "v1"));
ASSERT_EQ("v1", Get("foo"));
Flush();
ASSERT_EQ("v1", Get("foo"));
}
#endif // ROCKSDB_LITE
} // namespace rocksdb

2
util/options.cc
View File

@ -700,7 +700,7 @@ ColumnFamilyOptions* ColumnFamilyOptions::OptimizeForPointLookup(
block_based_options.block_cache =
NewLRUCache(static_cast<size_t>(block_cache_size_mb * 1024 * 1024));
table_factory.reset(new BlockBasedTableFactory(block_based_options));
memtable_factory.reset(NewHashLinkListRepFactory());
memtable_prefix_bloom_size_ratio = 0.02;
return this;
}