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Balance region is too slow #4990

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rleungx opened this issue May 19, 2022 · 2 comments · Fixed by #5254
Closed

Balance region is too slow #4990

rleungx opened this issue May 19, 2022 · 2 comments · Fixed by #5254
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@bufferflies
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affects-6.1 component/schedule Scheduling logic. severity/major type/bug The issue is confirmed as a bug.

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@rleungx
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rleungx commented May 19, 2022

Bug Report

What did you do?

Scale out two TiKV.

What did you expect to see?

Balance speed in a reasonable value

What did you see instead?

Screen Shot 2022-05-19 at 11 42 24 AM
Screen Shot 2022-05-19 at 2 55 41 PM

But from the debug log:

[2022/05/19 14:42:34.465 +08:00] [DEBUG] [utils.go:126] ["skip balance region"] [scheduler=balance-region-scheduler] [region-id=7902] [source-store=2] [target-store=20341] [source-size=92339] [source-score=142775.35001723023] [source-influence=0] [target-size=46986] [target-score=5715141991.420612] [target-influence=90] [average-region-size=73] [tolerant-resource=0]

The target score is 5715141991.420612 which is not expected.

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

master
@rleungx rleungx added the type/bug The issue is confirmed as a bug. label May 19, 2022
@mayjiang0203
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/severity major

@nolouch nolouch added the component/schedule Scheduling logic. label May 20, 2022
@bufferflies
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ref: #4654

@bufferflies bufferflies mentioned this issue Jul 1, 2022
Merged
ti-chi-bot added a commit that referenced this issue Jul 18, 2022
@bufferflies @nolouch @ti-chi-bot
schedulers: speed up the balance-region-scheduler by decrease infl…
a5c00c0 
…uence amp. (#5254)

close #4990

schedulers: speed up the balance-region-scheduler by decrease influence amp

Signed-off-by: bufferflies <1045931706@qq.com>

Co-authored-by: ShuNing <nolouch@gmail.com>
Co-authored-by: Ti Chi Robot <ti-community-prow-bot@tidb.io>
@ti-chi-bot ti-chi-bot mentioned this issue Jul 18, 2022
Merged
ti-chi-bot added a commit that referenced this issue Jul 18, 2022
@ti-chi-bot @bufferflies
schedulers: speed up the balance-region-scheduler by decrease infl…
d32cfb9 
…uence amp. (#5254) (#5320)

close #4990, ref #5254

schedulers: speed up the balance-region-scheduler by decrease influence amp

Signed-off-by: bufferflies <1045931706@qq.com>

Co-authored-by: bufferflies <1045931706@qq.com>
Co-authored-by: buffer <1045931706@qq.com>
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affects-6.1 component/schedule Scheduling logic. severity/major type/bug The issue is confirmed as a bug.
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schedulers: speed up the balance-region-scheduler by decrease influence amp. bufferflies/pd
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@jebter @nolouch @mayjiang0203 @bufferflies @rleungx @ti-chi-bot