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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16755) Honor flush policy under global memstore pressure
Date Mon, 27 Mar 2017 19:28:41 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16755?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15943901#comment-15943901

Hudson commented on HBASE-16755:

SUCCESS: Integrated in Jenkins build HBase-1.3-IT #15 (See [https://builds.apache.org/job/HBase-1.3-IT/15/])
HBASE-16755 Honor flush policy under global memstore pressure (garyh: rev ef55e5875a98c39d3dab1a62aea112bea22faac1)
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MemStoreFlusher.java

> 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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