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

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Zhongyi Xie 3886dddc3b force flushing stats CF to avoid holding old logs (#5509) ... Summary: WAL records RocksDB writes to all column families. When user flushes a a column family, the old WAL will not accept new writes but cannot be deleted yet because it may still contain live data for other column families. (See https://github.com/facebook/rocksdb/wiki/Write-Ahead-Log#life-cycle-of-a-wal for detailed explanation) Because of this, if there is a column family that receive very infrequent writes and no manual flush is called for it, it could prevent a lot of WALs from being deleted. PR https://github.com/facebook/rocksdb/pull/5046 introduced persistent stats column family which is a good example of such column families. Depending on the config, it may have long intervals between writes, and user is unaware of it which makes it difficult to call manual flush for it. This PR addresses the problem for persistent stats column family by forcing a flush for persistent stats column family when 1) another column family is flushed 2) persistent stats column family's log number is the smallest among all column families, this way persistent stats column family will keep advancing its log number when necessary, allowing RocksDB to delete old WAL files. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5509 Differential Revision: D16045896 Pulled By: miasantreble fbshipit-source-id: 286837b633e988417f0096ff38384742d3b40ef4		5 years ago
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db_impl.cc	Fix ingested file and direcotry not being sync (#5435)	5 years ago
db_impl.h	force flushing stats CF to avoid holding old logs (#5509)	5 years ago
db_impl_compaction_flush.cc	force flushing stats CF to avoid holding old logs (#5509)	5 years ago
db_impl_debug.cc	Persistent Stats: persist stats history to disk (#5046)	5 years ago
db_impl_experimental.cc	simplify include directive involving inttypes (#5402)	5 years ago
db_impl_files.cc	simplify include directive involving inttypes (#5402)	5 years ago
db_impl_open.cc	Fix ingested file and direcotry not being sync (#5435)	5 years ago
db_impl_readonly.cc	Make format	5 years ago
db_impl_readonly.h	Organizing rocksdb/db directory	5 years ago
db_impl_secondary.cc	Override check consistency for DBImplSecondary (#5469)	5 years ago
db_impl_secondary.h	Override check consistency for DBImplSecondary (#5469)	5 years ago
db_impl_write.cc	force flushing stats CF to avoid holding old logs (#5509)	5 years ago
db_secondary_test.cc	Fix a bug caused by secondary not skipping the beginning of new MANIFEST (#5472)	5 years ago