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From "Anastasia Braginsky (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-17487) Throw exception when pushing pipeline to snapshot fails twice
Date Mon, 23 Jan 2017 12:49:26 GMT

    [ https://issues.apache.org/jira/browse/HBASE-17487?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15834411#comment-15834411

Anastasia Braginsky commented on HBASE-17487:

[~ted_yu], I am fine with you recent patch that just changes the LOG. 

> Throw exception when pushing pipeline to snapshot fails twice
> -------------------------------------------------------------
>                 Key: HBASE-17487
>                 URL: https://issues.apache.org/jira/browse/HBASE-17487
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>            Priority: Minor
>         Attachments: 17487.v2.txt, 17487.v3.txt
> In CompactingMemStore#pushPipelineToSnapshot() , there is limit of 3 iterations of pipeline.swap()
call after which an empty ImmutableSegment is used as snapshot.
> However, there should be at most two iterations in pushPipelineToSnapshot() since during
the second iteration there is no concurrent write to memstore.
> We should throw exception in the 3rd iteration to signify that this scenario should never

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