fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph

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Marton Trencseni 522de4f59e Adding pin_l0_filter_and_index_blocks_in_cache feature. ... Summary: When a block based table file is opened, if prefetch_index_and_filter is true, it will prefetch the index and filter blocks, putting them into the block cache. What this feature adds: when a L0 block based table file is opened, if pin_l0_filter_and_index_blocks_in_cache is true in the options (and prefetch_index_and_filter is true), then the filter and index blocks aren't released back to the block cache at the end of BlockBasedTableReader::Open(). Instead the table reader takes ownership of them, hence pinning them, ie. the LRU cache will never push them out. Meanwhile in the table reader, further accesses will not hit the block cache, thus avoiding lock contention. When the table reader is destroyed, it releases the pinned blocks (if there were any). This has to happen before the cache is destroyed, so I had to introduce a TableReader::Close(), to guarantee the order of destruction. Test Plan: Added two unit tests for this. Existing unit tests run fine (default is pin_l0_filter_and_index_blocks_in_cache=false). DISABLE_JEMALLOC=1 OPT=-g make all valgrind_check -j32 Mac: OK. Linux: with D55287 patched in it's OK. Reviewers: sdong Reviewed By: sdong Subscribers: andrewkr, leveldb, dhruba Differential Revision: https://reviews.facebook.net/D54801		10 years ago
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utilities	optimistic transactions support for reinitialization	10 years ago
c.h	Adding pin_l0_filter_and_index_blocks_in_cache feature.	10 years ago
cache.h	Cache to have an option to fail Cache::Insert() when full	10 years ago
compaction_filter.h	Updated all copyright headers to the new format.	10 years ago
compaction_job_stats.h	Updated all copyright headers to the new format.	10 years ago
comparator.h	Updated all copyright headers to the new format.	10 years ago
convenience.h	Updated all copyright headers to the new format.	10 years ago
db.h	Change Property name from "rocksdb.current_version_number" to "rocksdb.current-super-version-number"	10 years ago
db_bench_tool.h	Separeate main from bench functionality to allow cusomizations	10 years ago
db_dump_tool.h	Updated all copyright headers to the new format.	10 years ago
env.h	Updated all copyright headers to the new format.	10 years ago
experimental.h	Updated all copyright headers to the new format.	10 years ago
filter_policy.h	Updated all copyright headers to the new format.	10 years ago
flush_block_policy.h	Updated all copyright headers to the new format.	10 years ago
immutable_options.h	Updated all copyright headers to the new format.	10 years ago
iostats_context.h	IOStatsContext::ToString() add option to exclude zero counters	10 years ago
iterator.h	Change Property name from "rocksdb.current_version_number" to "rocksdb.current-super-version-number"	10 years ago
ldb_tool.h	Updated all copyright headers to the new format.	10 years ago
listener.h	Fix lite_build	10 years ago
memtablerep.h	Updated all copyright headers to the new format.	10 years ago
merge_operator.h	Updated all copyright headers to the new format.	10 years ago
metadata.h	Updated all copyright headers to the new format.	10 years ago
options.h	Improve documentation of the allow_os_buffer parameter.	10 years ago
perf_context.h	Updated all copyright headers to the new format.	10 years ago
perf_level.h	Updated all copyright headers to the new format.	10 years ago
rate_limiter.h	Updated all copyright headers to the new format.	10 years ago
slice.h	Updated all copyright headers to the new format.	10 years ago
slice_transform.h	Updated all copyright headers to the new format.	10 years ago
snapshot.h	Updated all copyright headers to the new format.	10 years ago
sst_dump_tool.h	Updated all copyright headers to the new format.	10 years ago
sst_file_manager.h	Introduce SstFileManager::SetMaxAllowedSpaceUsage() to cap disk space usage	10 years ago
sst_file_writer.h	Updated all copyright headers to the new format.	10 years ago
statistics.h	Cache to have an option to fail Cache::Insert() when full	10 years ago
status.h	Updated all copyright headers to the new format.	10 years ago
table.h	Adding pin_l0_filter_and_index_blocks_in_cache feature.	10 years ago
table_properties.h	Revert "Adding new table properties"	10 years ago
thread_status.h	Updated all copyright headers to the new format.	10 years ago
transaction_log.h	Updated all copyright headers to the new format.	10 years ago
types.h	Updated all copyright headers to the new format.	10 years ago
universal_compaction.h	Updated all copyright headers to the new format.	10 years ago
version.h	Update current version to 4.6	10 years ago
wal_filter.h	Updated all copyright headers to the new format.	10 years ago
write_batch.h	Updated all copyright headers to the new format.	10 years ago
write_batch_base.h	Updated all copyright headers to the new format.	10 years ago