store/copr: invalidate stale regions for Mpp query. #24410
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Signed-off-by: ti-srebot <ti-srebot@pingcap.com>
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cherry pick to release-5.0 in PR #24432 |
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What problem does this PR solve?
relate issue: pingcap/tiflash#1873
Problem Summary:
Right now, we won't update the stale regions during executing Mpp queries. Then we added the try regions field in MppDispatchTask reponse. In this pr, we try to invalidate the stale regions in the mppr response.
What is changed and how it works?
Related changes
pingcap/kvproto#751
Check List
Tests
["DAGQueryBlockInterpreter: Start to retry 1 regions (10936,)"]["invalid region because tiflash detected stale region"] ["region id"="{ region id: 10936, ver: 116, confVer: 2 }"]proving this function works.Release note