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https://issues.apache.org/jira/browse/KUDU-3367?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17633680#comment-17633680
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YifanZhang commented on KUDU-3367:
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[~Koppa] [~laiyingchun] Ah, indeed, this GC operation relies on live row
counting. I agree that we do need GC deleted rows on tablets that don't support
live row counting.
> Delta file with full of delete op can not be schedule to compact
> ----------------------------------------------------------------
>
> Key: KUDU-3367
> URL: https://issues.apache.org/jira/browse/KUDU-3367
> Project: Kudu
> Issue Type: New Feature
> Components: compaction
> Reporter: dengke
> Assignee: dengke
> Priority: Major
> Attachments: image-2022-05-09-14-13-16-525.png,
> image-2022-05-09-14-16-31-828.png, image-2022-05-09-14-18-05-647.png,
> image-2022-05-09-14-19-56-933.png, image-2022-05-09-14-21-47-374.png,
> image-2022-05-09-14-23-43-973.png, image-2022-05-09-14-26-45-313.png,
> image-2022-05-09-14-32-51-573.png, image-2022-11-14-11-02-33-685.png
>
>
> If we get a REDO delta with full of delete op, wich means there is no update
> op in the file. The current compact algorithm will not schedule the file do
> compact. If such files exist, after accumulating for a period of time, it
> will greatly affect our scan speed. However, processing such files every time
> compact reduces compact's performance.
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