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From "Allan Yang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-17757) Unify blocksize after encoding to decrease memory fragment
Date Tue, 02 May 2017 00:46:04 GMT

    [ https://issues.apache.org/jira/browse/HBASE-17757?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15991905#comment-15991905
] 

Allan Yang commented on HBASE-17757:
------------------------------------

HBASE-17757v4-branch-1.patch is the patch generated by 'git format-patch', It is the same
patch as HBASE-17757-branch-1.v5.patch, you can submit HBASE-17757v4-branch-1.patch directly,
[~anoopsamjohn], thanks!

> Unify blocksize after encoding to decrease memory fragment 
> -----------------------------------------------------------
>
>                 Key: HBASE-17757
>                 URL: https://issues.apache.org/jira/browse/HBASE-17757
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Allan Yang
>            Assignee: Allan Yang
>             Fix For: 2.0.0
>
>         Attachments: HBASE-17757-branch-1.v5.patch, HBASE-17757.patch, HBASE-17757v2.patch,
HBASE-17757v3.patch, HBASE-17757v4-branch-1.patch, HBASE-17757v4.patch
>
>
> Usually, we store encoded block(uncompressed) in blockcache/bucketCache. Though we have
set the blocksize, after encoding, blocksize is varied. Varied blocksize will cause memory
fragment problem, which will result in more FGC finally.In order to relief the memory fragment,
This issue adjusts the encoded block to a unified size.



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