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placement-rule: it can't transfer leader to the target store #7992

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TonsnakeLin opened this issue Mar 27, 2024 · 12 comments · Fixed by #8010
Closed

placement-rule: it can't transfer leader to the target store #7992

TonsnakeLin opened this issue Mar 27, 2024 · 12 comments · Fixed by #8010
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@TonsnakeLin
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affects-5.4 affects-6.1 affects-6.5 affects-7.1 affects-7.5 report/customer Customers have encountered this bug. severity/major type/bug The issue is confirmed as a bug.

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@TonsnakeLin
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Bug Report

What did you do?

There are two data centers, one is dc1 and the other is dc2. At first we forced the leader at dc2 by placement-rule , and we switched the leader to dc1 by another placement-rule. But it left two region leader in dc2 at last.

What did you expect to see?

All region leaders were transfered to dc2.

What did you see instead?

There are two region leaders left in dc2 at last.

What version of PD are you using (pd-server -V)?

Release Version: v6.5.4-20231107-65de8fc
@TonsnakeLin TonsnakeLin added the type/bug The issue is confirmed as a bug. label Mar 27, 2024
@TonsnakeLin
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/assign @TonsnakeLin

@TonsnakeLin
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It is the root cause of this issue bellow.
The transfer-leader operator wasn't gernerated for the two region, and the leaders were not switched to dc1 at last.
Why was the operator not generated? Because there is a merge-region operator was executing and one region only has one operator at the same time.
Why the merge operator was not finished? The merge-region for region A and B operator was gernerated at pd-server successfuly, but it run failed at tikv-server becase the region A was splitted and it's key range has been changed. Unfortunately, the timeout value of this merge-region opeator is 1h8m, it can not be finished or canceld.

There are two unresonable points.

  1. The timeout value of the merge-region operator is too long.
  2. The merge-region should detect the region meta changed when region A was splitted.

@TonsnakeLin TonsnakeLin mentioned this issue Apr 1, 2024
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/remove-label may-affects-7.1

@TonsnakeLin
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/remove-label may-affects-5.4, may-affects-6.1, may-affects-7.5

@TonsnakeLin
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/remove-label may-affects-5.4

@TonsnakeLin
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/remove-label may-affects-6.1

@TonsnakeLin
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/remove-label may-affects-7.5

@TonsnakeLin
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/label affects-5.4

@TonsnakeLin
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/label affects-6.1

@TonsnakeLin
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/label affects-7.1

@TonsnakeLin
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/label affects-7.5

@ti-chi-bot ti-chi-bot bot closed this as completed in #8010 Apr 3, 2024
ti-chi-bot bot added a commit that referenced this issue Apr 3, 2024
@TonsnakeLin @ti-chi-bot
schedule: add check action when poll the opeators from opNotifierQueue (
a2b0e3c 
#8010)

close #7992

Signed-off-by: TonsnakeLin <michael.p@pingcap.com.cn>

Co-authored-by: TonsnakeLin <michael.p@pingcap.com.cn>
Co-authored-by: ti-chi-bot[bot] <108142056+ti-chi-bot[bot]@users.noreply.github.com>
ti-chi-bot pushed a commit to ti-chi-bot/pd that referenced this issue Apr 15, 2024
@TonsnakeLin @ti-chi-bot
This is an automated cherry-pick of tikv#8010
07010d5 
close tikv#7992

Signed-off-by: ti-chi-bot <ti-community-prow-bot@tidb.io>
@ti-chi-bot ti-chi-bot mentioned this issue Apr 15, 2024
Closed
@TonsnakeLin TonsnakeLin mentioned this issue Apr 17, 2024
Merged
ti-chi-bot bot pushed a commit that referenced this issue Apr 17, 2024
@TonsnakeLin
schedule: add check action when poll the opeators from opNotifierQueu…
c325311 
…e(pick from 8010) (#8086)

ref #7992

Signed-off-by: TonsnakeLin <lpbgytong@163.com>
ti-chi-bot pushed a commit to ti-chi-bot/pd that referenced this issue May 13, 2024
@TonsnakeLin @ti-chi-bot
This is an automated cherry-pick of tikv#8010
1558840 
close tikv#7992

Signed-off-by: ti-chi-bot <ti-community-prow-bot@tidb.io>
@ti-chi-bot ti-chi-bot mentioned this issue May 13, 2024
Closed
TonsnakeLin added a commit to TonsnakeLin/pd that referenced this issue May 15, 2024
@TonsnakeLin
schedule: add check action when poll the opeators from opNotifierQueu…
acecac4 
…e(pick from 8010) (tikv#8086)

ref tikv#7992

Signed-off-by: TonsnakeLin <lpbgytong@163.com>
@TonsnakeLin TonsnakeLin mentioned this issue May 15, 2024
Merged
@ti-chi-bot ti-chi-bot mentioned this issue May 15, 2024
Merged
ti-chi-bot bot pushed a commit that referenced this issue May 17, 2024
@TonsnakeLin
schedule: add check action when poll the opeators from opNotifierQueu…
33d839b 
…e(pick from 8086) (#8178)

ref #7992

Signed-off-by: TonsnakeLin <lpbgytong@163.com>
ti-chi-bot bot pushed a commit that referenced this issue May 20, 2024
@ti-chi-bot
schedule: add check action when poll the opeators from opNotifierQueue (
5a3d21d 
#8010) (#8179)

close #7992

Signed-off-by: TonsnakeLin <michael.p@pingcap.com.cn>

Co-authored-by: TonsnakeLin <michael.p@pingcap.com.cn>
@seiya-annie
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/found customer

@ti-chi-bot ti-chi-bot bot added the report/customer Customers have encountered this bug. label Jun 4, 2024
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affects-5.4 affects-6.1 affects-6.5 affects-7.1 affects-7.5 report/customer Customers have encountered this bug. severity/major type/bug The issue is confirmed as a bug.
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schedule: add check action when poll the opeators from opNotifierQueue TonsnakeLin/pd
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@jebter @seiya-annie @ti-chi-bot @TonsnakeLin