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planner: check full match of each range for BatchPointGet plan (#19456) #19460

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merged 2 commits into from
Aug 26, 2020

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cherry-pick #19456 to release-4.0


What problem does this PR solve?

Issue Number: close #19191

Problem Summary:

Planner chooses BatchPointGet plan while it should not.

What is changed and how it works?

What's Changed:
Check whether each range is a full match for the unique index before considering BatchPointGet plan.

Related changes

  • Need to cherry-pick to the release branch

Check List

Tests

  • Unit test

Side effects

N/A

Release note

  • fix wrong result caused by mistaken usage of batch point get.

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/run-all-tests

Signed-off-by: ti-srebot <ti-srebot@pingcap.com>
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@lzmhhh123 lzmhhh123 left a comment

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LGTM

@ti-srebot ti-srebot added the status/LGT1 Indicates that a PR has LGTM 1. label Aug 26, 2020
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@XuHuaiyu XuHuaiyu left a comment

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LGTM

@ti-srebot ti-srebot added status/LGT2 Indicates that a PR has LGTM 2. and removed status/LGT1 Indicates that a PR has LGTM 1. labels Aug 26, 2020
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jebter commented Aug 26, 2020

/merge

@ti-srebot ti-srebot added the status/can-merge Indicates a PR has been approved by a committer. label Aug 26, 2020
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/run-all-tests

@ti-srebot ti-srebot merged commit 7fe8264 into pingcap:release-4.0 Aug 26, 2020
@eurekaka eurekaka deleted the release-4.0-ef51ea8befba branch August 27, 2020 02:34
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5 participants