stmtctx: add mutex to protect stmtCache(#36159) (#36351)#36390

Closed

ti-srebot wants to merge 1 commit intopingcap:release-6.0from ti-srebot:release-6.0-5f3252c85bc9

+19-8

Commits on Jul 21, 2022

cherry pick pingcap#36351 to release-6.0

pingandb
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ti-srebot
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