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From "binlijin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16703) Explore object pooling of SeekerState
Date Mon, 26 Sep 2016 04:25:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16703?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15522005#comment-15522005
] 

binlijin commented on HBASE-16703:
----------------------------------

SeekerState is org.apache.hadoop.hbase.io.encoding.BufferedDataBlockEncoder.SeekerState.

> Explore object pooling of SeekerState
> -------------------------------------
>
>                 Key: HBASE-16703
>                 URL: https://issues.apache.org/jira/browse/HBASE-16703
>             Project: HBase
>          Issue Type: Task
>            Reporter: Andrew Purtell
>
> In read workloads 35% of the allocation pressure produced by servicing RPC requests comes
from SeekerState.<init> of the DataBlockEncoder implementation currently in use, where
we allocate two byte arrays of INITIAL_KEY_BUFFER_SIZE in length. There's an opportunity for
object pooling of SeekerState here. Subsequent code checks if those byte arrays are sized
sufficiently to handle incoming data to copy. The arrays will be resized if needed. 



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