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From "Kai Zheng (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8668) Erasure Coding: revisit buffer used for encoding and decoding.
Date Tue, 21 Jun 2016 17:07:58 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8668?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15342195#comment-15342195

Kai Zheng commented on HDFS-8668:

I got it. Yeah, to use the native coder at full performance provided by HADOOP-11540 it will
need this work and also some other related tasks. These should be in for the 3.0 release otherwise
the performance is badly impacted. Will see if it's doable to move on this even when the ISA-L
coder isn't in yet.

> Erasure Coding: revisit buffer used for encoding and decoding.
> --------------------------------------------------------------
>                 Key: HDFS-8668
>                 URL: https://issues.apache.org/jira/browse/HDFS-8668
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Yi Liu
>            Assignee: Kai Zheng
>         Attachments: HDFS-8668-v1.patch, HDFS-8668-v2.patch
> For encoding and decoding buffers, currently some places use java heap ByteBuffer,  some
use direct byteBUffer, and some use java byte array.  If the coder implementation is native,
we should use direct ByteBuffer. This jira is to  revisit all encoding/decoding buffers and
improve them.

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