[
https://issues.apache.org/jira/browse/HBASE-15513?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15457499#comment-15457499
]
ramkrishna.s.vasudevan commented on HBASE-15513:
------------------------------------------------
The reason why chunk pool is better with G1GC is as Anoop stated but that is
for lower heap sizes. For higher heap sizes may be it is not needed to be ON by
default? So am not very sure whether we should always enable this chunkpool.
When we use offheap MSLAB then yes, it has to be ON, so that we avoid offheap
memory fragmentation.
> 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: Sub-task
> Affects Versions: 2.0.0
> Reporter: Vladimir Rodionov
> Assignee: Vladimir Rodionov
> Fix For: 2.0.0
>
> Attachments: HBASE-15513-v1.patch
>
>
> 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)
