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From "Enis Soztutar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16755) Honor flush policy under global memstore pressure
Date Wed, 01 Mar 2017 21:26:45 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16755?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15891067#comment-15891067
] 

Enis Soztutar commented on HBASE-16755:
---------------------------------------

bq. Enis Soztutar, yes, all of our current flush policies will fall back to all stores if
none of the stores meets the threshold.
Ok, thanks for looking. 

> Honor flush policy under global memstore pressure
> -------------------------------------------------
>
>                 Key: HBASE-16755
>                 URL: https://issues.apache.org/jira/browse/HBASE-16755
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>            Reporter: Ashu Pachauri
>            Assignee: Ashu Pachauri
>             Fix For: 1.3.1
>
>         Attachments: HBASE-16755.v0.patch
>
>
> When global memstore reaches the low water mark, we pick the best flushable region and
flush all column families for it. This is a suboptimal approach in the  sense that it leads
to an unnecessarily high file creation rate and IO amplification due to compactions. We should
still try to honor the underlying FlushPolicy.



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