[jira] [Work started] (HBASE-23349) Reader lock on compacted store files preventing archival of compacted files

["Viraj Jasani (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-23349?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on HBASE-23349 started by Viraj Jasani.
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> Reader lock on compacted store files preventing archival of compacted files
> ---------------------------------------------------------------------------
>
>                 Key: HBASE-23349
>                 URL: https://issues.apache.org/jira/browse/HBASE-23349
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 3.0.0, 2.3.0, 1.6.0
>            Reporter: Viraj Jasani
>            Assignee: Viraj Jasani
>            Priority: Major
>             Fix For: 3.0.0, 2.3.0, 1.6.0
>
>
> refCounts on compacted away store files as low as 1 can also prevent archival.
> {code:java}
> regionserver.HStore - Can't archive compacted file hdfs://{{root-dir}}/hbase/data/default/t1/12a9e1112e0371955b3db8d3ebb2d298/cf1/73b72f5ddfce4a34a9e01afe7b83c1f9 because of either isCompactedAway=true or file has reference, isReferencedInReads=true, refCount=1, skipping for now.
> {code}
> We should come up with core code blocking reader lock if client or coprocessor has held the lock for significantly high amount of time(configurable - mostly same as discharger thread interval) or gracefully resolve reader lock issue.



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