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store/tikv: fix misuse of PD client's GetStore #23695

Merged
merged 7 commits into from
Mar 31, 2021
Merged

store/tikv: fix misuse of PD client's GetStore #23695

merged 7 commits into from
Mar 31, 2021

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longfangsong
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Signed-off-by: longfangsong [email protected]

What problem does this PR solve?

Issue Number: close #23676

Problem Summary:

  • TiDB wrongly uses the PD client's GetStore(), which may result in dead loops.
  • store.State isn't changed if it becomes a tombstone

What is changed and how it works?

What's Changed:

Skip the early-return if branch when "load Store from PD success but pd didn't found the store"

How it Works:

By checking the error message. This is a quick and dirty solution. A better solution (which needs to change the pdClient, and maybe the whole way of our error handling process) needs more discussion.

Related changes

  • Need to cherry-pick to the release branch
    Needs to cherry-pick to 5.0.

Check List

Tests

  • Unit test
  • Integration test

Release note

  • No release note

@ti-chi-bot ti-chi-bot added the size/S Denotes a PR that changes 10-29 lines, ignoring generated files. label Mar 30, 2021
@ti-chi-bot ti-chi-bot added size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. and removed size/S Denotes a PR that changes 10-29 lines, ignoring generated files. labels Mar 30, 2021
@longfangsong
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/cc @youjiali1995

@longfangsong longfangsong requested a review from a team as a code owner March 30, 2021 11:46
@longfangsong longfangsong requested review from winoros and removed request for a team March 30, 2021 11:46
@longfangsong
add more possible error message on "pd didn't found the store"
96d4592 
Signed-off-by: longfangsong <[email protected]>
(cherry picked from commit 630d390e5c414b92d749b8df7e470c6b21310f4e)
@ti-chi-bot ti-chi-bot added size/M Denotes a PR that changes 30-99 lines, ignoring generated files. and removed size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. labels Mar 30, 2021
youjiali1995
youjiali1995 reviewed Mar 30, 2021
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@youjiali1995
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Seems the root cause of #22907 is not this PR. Nevertheless, this PR fixes some problems.

@youjiali1995 youjiali1995 added the sig/transaction SIG:Transaction label Mar 30, 2021
@ichn-hu ichn-hu mentioned this pull request Mar 30, 2021
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@ti-chi-bot ti-chi-bot added size/S Denotes a PR that changes 10-29 lines, ignoring generated files. and removed size/M Denotes a PR that changes 30-99 lines, ignoring generated files. labels Mar 30, 2021
MyonKeminta
MyonKeminta reviewed Mar 30, 2021
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LGTM

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@ti-chi-bot ti-chi-bot added the status/LGT1 Indicates that a PR has LGTM 1. label Mar 30, 2021
@lysu
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lysu commented Mar 30, 2021

/merge

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This pull request has been accepted and is ready to merge.

Commit hash: ac0a96e

@ti-chi-bot ti-chi-bot added the status/can-merge Indicates a PR has been approved by a committer. label Mar 30, 2021
@ti-chi-bot ti-chi-bot merged commit addbd46 into pingcap:master Mar 31, 2021
@zhangjinpeng87
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Should we pick this fix to 5.0?

@youjiali1995
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Should we pick this fix to 5.0?

@zhangjinpeng1987 No. Even though TiDB wrongly uses it, TiDB works well with no issues.

@youjiali1995
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/run-cherry-picker

@ti-srebot ti-srebot mentioned this pull request May 8, 2021
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cherry pick to release-4.0 in PR #24498

@ti-srebot ti-srebot mentioned this pull request May 8, 2021
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ti-srebot pushed a commit to ti-srebot/tidb that referenced this pull request May 8, 2021
@longfangsong @ti-srebot
cherry pick pingcap#23695 to release-3.0
8085d54 
Signed-off-by: ti-srebot <[email protected]>
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cherry pick to release-3.0 in PR #24499

@ti-srebot ti-srebot mentioned this pull request May 8, 2021
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ti-srebot pushed a commit to ti-srebot/tidb that referenced this pull request May 8, 2021
@longfangsong @ti-srebot
cherry pick pingcap#23695 to release-5.0
19aa2f4 
Signed-off-by: ti-srebot <[email protected]>
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cherry pick to release-5.0 in PR #24500

youjiali1995 pushed a commit to ti-srebot/tidb that referenced this pull request May 12, 2021
@longfangsong @youjiali1995
cherry pick pingcap#23695 to release-4.0
0172c1b 
Signed-off-by: ti-srebot <[email protected]>
Signed-off-by: youjiali1995 <[email protected]>
ti-chi-bot pushed a commit that referenced this pull request May 12, 2021
@ti-srebot
store/tikv: fix misuse of PD client's GetStore (#23695) (#24498)
996e89f
youjiali1995 pushed a commit to youjiali1995/tidb that referenced this pull request Jun 30, 2021
@longfangsong @youjiali1995
store/tikv: fix misuse of PD client's GetStore (pingcap#23695)
483a504
@youjiali1995 youjiali1995 mentioned this pull request Jun 30, 2021
Merged
youjiali1995 pushed a commit to youjiali1995/tidb that referenced this pull request Jun 30, 2021
@longfangsong @youjiali1995
store/tikv: fix misuse of PD client's GetStore (pingcap#23695)
e3e6989
@youjiali1995 youjiali1995 mentioned this pull request Jun 30, 2021
Merged
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@youjiali1995 youjiali1995 youjiali1995 approved these changes

@MyonKeminta MyonKeminta MyonKeminta approved these changes

@winoros winoros Awaiting requested review from winoros

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Successfully merging this pull request may close these issues.

TiDB wrongly uses PD client's GetStore which may result in dead loops
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@longfangsong @youjiali1995 @ti-chi-bot @zhouqiang-cl @lysu @zhangjinpeng87 @ti-srebot @MyonKeminta