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https://issues.apache.org/jira/browse/HBASE-8060?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13689424#comment-13689424
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Sergey Shelukhin commented on HBASE-8060:
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The meaning of total compacting KVs is the number of KVs in the input for
last-started compaction (this historically assumes one compaction at a time per
store). I.e. either current compaction or the last finished one. It is an
estimate of the number of KVs compaction will see, used to track progress.
Patch does change meaning of it to reconcile the (often incorrect) estimate
with reality..
> "Num compacting KVs" diverges from "num compacted KVs" over time
> ----------------------------------------------------------------
>
> Key: HBASE-8060
> URL: https://issues.apache.org/jira/browse/HBASE-8060
> Project: HBase
> Issue Type: Bug
> Components: Compaction, UI
> Affects Versions: 0.94.6, 0.95.0, 0.95.2
> Reporter: Andrew Purtell
> Assignee: Sergey Shelukhin
> Attachments: HBASE-8060-v0.patch, screenshot.png
>
>
> I have been running what amounts to an ingestion test for a day or so. This
> is an all-in-one cluster launched with './bin/hbase master start' from
> sources. In the RS stats on the master UI, the "num compacting KVs" has
> diverged from "num compacted KVs" even though compaction has been completed
> from perspective of selection, no compaction tasks are running on the RS. I
> think this could be confusing -- is compaction happening or not?
> Or maybe I'm misunderstanding what this is supposed to show?
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