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