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https://issues.apache.org/jira/browse/HIVE-24824?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Peter Varga reassigned HIVE-24824:
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> Define metrics for compaction observability
> -------------------------------------------
>
> Key: HIVE-24824
> URL: https://issues.apache.org/jira/browse/HIVE-24824
> Project: Hive
> Issue Type: Improvement
> Reporter: Peter Varga
> Assignee: Peter Varga
> Priority: Major
>
> Many times if there are failures in the Compaction background processes
> (Initiator, Worker, Cleaner) it is hard notice the problem until it causes
> serious performance degradation.
> We should create new JMX metrics, that would make it easier to monitor the
> compaction health. Examples are:
> * number of failed / initiated compaction
> * number of aborted txns, oldest aborted txns
> * tables with disabled compactions and writes
> * Initiator and Cleaner cycle runtime
> * Size of ACID metadata tables that should have ~ constant rows
> (txn_to_writeId, completed_txns)
>
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