hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Enis Soztutar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16755) Honor flush policy under global memstore pressure
Date Thu, 02 Mar 2017 19:54:45 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16755?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15892875#comment-15892875
] 

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

bq. This requires changing the LimitedPrivate Region api, and may not make sense to do for
a point release.
This seems like an improvement, and not a bug. And the risk is non-trivial as per above. So,
I would say it should not go to 1.3.1 anyway. It can be 1.4, and 2.0. 

> 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.



--
This message was sent by Atlassian JIRA
(v6.3.15#6346)

Mime
View raw message