merge from facebook/rocksdb #1
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Summary: Verified with an Ampere Computing eMAG aarch64 system. Pull Request resolved: #5258 Differential Revision: D15807309 Pulled By: maysamyabandeh fbshipit-source-id: ab85d2fd3fe40e6094430ab0eba557b1e979510d
Summary: Add Alluxio's use case of RocksDB to `USERS.md` for metadata service Pull Request resolved: #5434 Differential Revision: D15766559 Pulled By: riversand963 fbshipit-source-id: b68ef851f8f92e0925c31e55296260225fdf849e
Summary: `sync_file_range` returns `ENOSYS` on Windows Subsystem for Linux even when using a supposedly supported filesystem like ext4. To handle this case we can do a dynamic check that a no-op `sync_file_range` invocation, which is accomplished by passing zero for the `flags` argument, succeeds. Also I rearranged the function and comments to hopefully make it more easily understandable. Pull Request resolved: #5416 Differential Revision: D15807061 fbshipit-source-id: d31d94e1f228b7850ea500e6199f8b5daf8cfbd3
…tions (#5448) Summary: Calling PurgeObsoleteFiles with a JobContext for which HaveSomethingToDelete is false is a precondition violation. This would trigger an assertion in debug builds; however, in release builds with assertions disabled, this can result in the pending_purge_obsolete_files_ counter in DBImpl underflowing, which in turn can lead to the process hanging during database close. Pull Request resolved: #5448 Differential Revision: D15792569 Pulled By: ltamasi fbshipit-source-id: 82d92c9b4f6a9efcdc69dbb3d5a52a1ae2dd2472
Summary: This PR integrates the block cache tracer class into db_impl.cc. db_impl.cc contains a member variable of AtomicBlockCacheTraceWriter class and passes its reference to the block_based_table_reader. Pull Request resolved: #5433 Differential Revision: D15728016 Pulled By: HaoyuHuang fbshipit-source-id: 23d5659e8c82d556833dcc1a5558aac8c1f7db71
Summary: This PR removes the unused variable that causes CLANG build to fail. Pull Request resolved: #5457 Differential Revision: D15825027 Pulled By: HaoyuHuang fbshipit-source-id: 72c847c39ca310560efcbc5938cffa6f31164068
Summary: This property is needed to run the child jobs on the same host and thus propagate the child job status back to the parent's. Pull Request resolved: #5456 Reviewed By: yancouto Differential Revision: D15824382 Pulled By: maysamyabandeh fbshipit-source-id: 42f2efbedaa3a8b399281105f0ce793c1c9a6191
Summary: "__attribute__((__weak__))" was introduced in port\jemalloc_helper.h. It's not supported by Microsoft VS 2015, resulting in compile error. This fix adds a #if branch to work around the compile issue. Pull Request resolved: #5458 Differential Revision: D15827285 fbshipit-source-id: 8c5f7ad31de1ac677bd96f16c4450767de834beb
Summary: It seems like CF Options are not properly validated when creating a new column family with `CreateColumnFamily` API; only a selected few checks are done. Calling `ColumnFamilyData::ValidateOptions`, which is the single source for all CFOptions validations, will help fix this. (`ColumnFamilyData::ValidateOptions` is already called at the time of `DB::Open`). **Test Plan:** Added a new test: `DBTest.CreateColumnFamilyShouldFailOnIncompatibleOptions` ``` TEST_TMPDIR=/dev/shm ./db_test --gtest_filter=DBTest.CreateColumnFamilyShouldFailOnIncompatibleOptions ``` Also ran gtest-parallel to make sure the new test is not flaky. ``` TEST_TMPDIR=/dev/shm ~/gtest-parallel/gtest-parallel ./db_test --gtest_filter=DBTest.CreateColumnFamilyShouldFailOnIncompatibleOptions --repeat=10000 [10000/10000] DBTest.CreateColumnFamilyShouldFailOnIncompatibleOptions (15 ms) ``` Pull Request resolved: #5453 Differential Revision: D15816851 Pulled By: sagar0 fbshipit-source-id: 9e702b9850f5c4a7e0ef8d39e1e6f9b81e7fe1e5
Summary: This PR integrates the block cache tracer into block based table reader. The tracer will write the block cache accesses using the trace_writer. The tracer is null in this PR so that nothing will be logged. Pull Request resolved: #5441 Differential Revision: D15772029 Pulled By: HaoyuHuang fbshipit-source-id: a64adb92642cd23222e0ba8b10d86bf522b42f9b
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merge from facebook/rocksdb