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

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Andrew Kryczka 538d2365e9 Fix race condition in BackupEngineTest.ChangeManifestDuringBackupCreation (#9327) ... Summary: The failure looked like this: ``` utilities/backupable/backupable_db_test.cc:3161: Failure Value of: db_chroot_env_->FileExists(prev_manifest_path).IsNotFound() Actual: false Expected: true ``` The failure could be coerced consistently with the following patch: ``` diff --git a/db/db_impl/db_impl_compaction_flush.cc b/db/db_impl/db_impl_compaction_flush.cc index 80410f671..637636791 100644 --- a/db/db_impl/db_impl_compaction_flush.cc +++ b/db/db_impl/db_impl_compaction_flush.cc @@ -2772,6 +2772,8 @@ void DBImpl::BackgroundCallFlush(Env::Priority thread_pri) { if (job_context.HaveSomethingToClean() || job_context.HaveSomethingToDelete() || !log_buffer.IsEmpty()) { mutex_.Unlock(); + bg_cv_.SignalAll(); + sleep(1); TEST_SYNC_POINT("DBImpl::BackgroundCallFlush:FilesFound"); // Have to flush the info logs before bg_flush_scheduled_-- // because if bg_flush_scheduled_ becomes 0 and the lock is ``` The cause was a familiar problem, which is manual flush/compaction may return before files they obsoleted are removed. The solution is just to wait for "scheduled" work to complete, which includes all phases including cleanup. Pull Request resolved: https://github.com/facebook/rocksdb/pull/9327 Test Plan: after this PR, even the above patch to coerce the bug cannot cause the test to fail. Reviewed By: riversand963 Differential Revision: D33252208 Pulled By: ajkr fbshipit-source-id: 720a7eaca58c7247d221911fffe3d5e1dbf581e9		3 years ago
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backupable_db.cc	New stable, fixed-length cache keys (#9126)	3 years ago
backupable_db_impl.h	Begin forward compatibility for new backup meta schema (#8069)	4 years ago
backupable_db_test.cc	Fix race condition in BackupEngineTest.ChangeManifestDuringBackupCreation (#9327)	3 years ago