Summary:
The MultiGetFromBatchAndDB would fail if the PinnableSlice value being returned was pinned. This could happen if the value was retrieved from the DB (not memtable) or potentially if the values were reused (and a previous iteration returned a slice that was pinned).
This change resets the pinnable value to clear it prior to attempting to use it, thereby eliminating the problem with the value already being pinned.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/8299
Reviewed By: jay-zhuang
Differential Revision: D28455426
Pulled By: mrambacher
fbshipit-source-id: a34d7d983ec9b6bb4c8a2b4892f72858d43e6972
6b0a22a4b0