hbase-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Vladimir Rodionov (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HBASE-15513) hbase.hregion.memstore.chunkpool.maxsize is 0.0 by default
Date Tue, 22 Mar 2016 23:38:25 GMT

     [ https://issues.apache.org/jira/browse/HBASE-15513?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vladimir Rodionov resolved HBASE-15513.
---------------------------------------
    Resolution: Information Provided

MemSLAB chunk pool must be enabled, at least in CMS. There are some debates whether it should
be enabled in G1GC or not.

Recommendation:
Set *hbase.hregion.memstore.chunkpool.maxsize* to memstore default size (0.4f)


> hbase.hregion.memstore.chunkpool.maxsize is 0.0 by default
> ----------------------------------------------------------
>
>                 Key: HBASE-15513
>                 URL: https://issues.apache.org/jira/browse/HBASE-15513
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 2.0.0
>            Reporter: Vladimir Rodionov
>            Assignee: Vladimir Rodionov
>             Fix For: 2.0.0
>
>
> That results in excessive MemStoreLAB chunk allocations because we can not reuse them.
Not sure, why it has been disabled, by default. May be the code has not been tested well?



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message