sdong f5d4dbbeef Fix the bug that compressed cache is disabled in read-only DBs (#6990)
Summary:
Compressed block cache is disabled in https://github.com/facebook/rocksdb/pull/4650 for no good reason. Re-enable it.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6990

Test Plan: Add a unit test to make sure a general function works with read-only DB + compressed block cache.

Reviewed By: ltamasi

Differential Revision: D22072755

fbshipit-source-id: 2a55df6363de23a78979cf6c747526359e5dc7a1
2020-06-18 10:30:53 -07:00
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2020-05-28 10:40:03 -07:00