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https://issues.apache.org/jira/browse/HDFS-8668?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15333655#comment-15333655
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Kai Zheng commented on HDFS-8668:
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Hi Liran,
As mentioned in the description, this family was to revisit all the buffers for
erasure coding computing and make all the places use ByteBuffer and even
direct ByteBuffer consistently according to the used erasure coder. The main
purpose is to improve the performance, particularly for the native coders.
Unfortunately we're slow to commit the native coder in HADOOP-11540, so without
that being in, quite a few issues after that like this family are pending here
to proceed.
What cases do you meet to have this in for the release?
> 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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