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From "Vladimir Rodionov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15544) HFileReaderImpl.readBlock allocates memory for HFileBlock on every call
Date Mon, 28 Mar 2016 22:36:25 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15544?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15215019#comment-15215019
] 

Vladimir Rodionov commented on HBASE-15544:
-------------------------------------------

Reuse them if cache-on-read is disabled (including compaction case).

> HFileReaderImpl.readBlock allocates memory for HFileBlock on every call
> -----------------------------------------------------------------------
>
>                 Key: HBASE-15544
>                 URL: https://issues.apache.org/jira/browse/HBASE-15544
>             Project: HBase
>          Issue Type: Sub-task
>          Components: Compaction
>            Reporter: Vladimir Rodionov
>            Assignee: Vladimir Rodionov
>             Fix For: 2.0.0
>
>
> This accounts for 25% of memory allocation during compaction when compression is enabled.



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