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https://issues.apache.org/jira/browse/HBASE-23349?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17006485#comment-17006485
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Lars Hofhansl commented on HBASE-23349:
---------------------------------------

Sure.

[~ram_krish], [~anoop.hbase], FYI. I know you guys invested a lot of time in 
this. In light of the issues I'm in favor removing the refcounting code and 
restoring the old behavior. Let's have a discussion.

 

> Low refCount preventing archival of compacted away 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
>
>
> We have observed that refCount on compacted away store files as low as 1 is 
> 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 (run as part of discharger thread) 
> gracefully resolve reader lock issue by resetting ongoing scanners to start 
> pointing to new store files instead of compacted away store files.



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