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https://issues.apache.org/jira/browse/HIVE-25080?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on HIVE-25080 started by Antal Sinkovits.
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> Create metric about oldest entry in "ready for cleaning" state
> --------------------------------------------------------------
>
> Key: HIVE-25080
> URL: https://issues.apache.org/jira/browse/HIVE-25080
> Project: Hive
> Issue Type: Bug
> Reporter: Antal Sinkovits
> Assignee: Antal Sinkovits
> Priority: Major
>
> When a compaction txn commits, COMPACTION_QUEUE.CQ_COMMIT_TIME is updated
> with the current time. Then the compaction state is set to "ready for
> cleaning". (... and then the Cleaner runs and the state is set to "succeeded"
> hopefully)
> Based on this we know (roughly) how long a compaction has been in state
> "ready for cleaning".
> We should create a metric similar to compaction_oldest_enqueue_age_in_sec
> that would show that the cleaner is blocked by something i.e. find the
> compaction in "ready for cleaning" that has the oldest commit time.
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