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https://issues.apache.org/jira/browse/HBASE-11702?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14095141#comment-14095141
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Lars Hofhansl commented on HBASE-11702:
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Number of bytes still important, right? (I'd say more important than Cell count)
For compaction we already get the length of each KV, can add to Flushes as well.
Followup jira? If you're tired of me asking I can add that :)


> Better introspection of long running compactions
> ------------------------------------------------
>
>                 Key: HBASE-11702
>                 URL: https://issues.apache.org/jira/browse/HBASE-11702
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Andrew Purtell
>            Assignee: Andrew Purtell
>            Priority: Minor
>             Fix For: 0.99.0, 2.0.0, 0.98.6
>
>         Attachments: HBASE-11702.patch, HBASE-11702_v2-0.98.patch, 
> HBASE-11702_v2.patch
>
>
> For better introspection of long running compactions, periodically print 
> compaction progress for a file at DEBUG level (thread name, file path, total 
> compacted KVs, total compacted bytes, completion percent, rate).



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