3 Commits (95c192475df4ad2c1e542b3c08d0e978df96deca)

Author	SHA1	Message	Date
krad	81f6b33d93	Fix tsan error ... Summary: The tsan error was because the random implementation we have is not thread safe, using Random::GetTLSInstance Test Plan: Run tests in Linux Reviewers: sdong Subscribers: andrewkr, dhruba, leveldb Differential Revision: https://reviews.facebook.net/D59559	9 years ago
Islam AbdelRahman	8ff59b2b40	Disable PersistentCacheTierTest.VolatileCacheInsertWithEviction test under TSAN temporarily ... Summary: Disable the test under TSAN temporary to temporarily the build Test Plan: run the test under TSAN Reviewers: kradhakrishnan, andrewkr, sdong Reviewed By: sdong Subscribers: andrewkr, dhruba Differential Revision: https://reviews.facebook.net/D59337	9 years ago
krad	d755c62f92	Persistent Read Cache (5) Volatile cache tier implementation ... Summary: This provides provides an implementation of PersistentCacheTier that is specialized for RAM. This tier does not persist data though. Why do we need this tier ? This is ideal as tier 0. This tier can host data that is too hot. Why can't we use Cache variants ? Yes you can use them instead. This tier can potentially outperform BlockCache in RAW mode by virtue of compression and compressed cache in block cache doesn't seem very popular. Potentially this tier can be modified to under stand the disadvantage of the tier below and retain data that the tier below is bad at handling (for example index and bloom data that is huge in size) Test Plan: Run unit tests added Subscribers: andrewkr, dhruba, leveldb Differential Revision: https://reviews.facebook.net/D57069	9 years ago