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https://issues.apache.org/jira/browse/HADOOP-11798?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15588019#comment-15588019
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SammiChen commented on HADOOP-11798:
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Hi, Wei-Chiu and Kai, thanks so much for review the patch! I realize there may
be more comments for documents than for code. So I created a new JIRA
HDFS-11033 to track the documentation.
> Native raw erasure coder in XOR codes
> -------------------------------------
>
> Key: HADOOP-11798
> URL: https://issues.apache.org/jira/browse/HADOOP-11798
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: io
> Reporter: Kai Zheng
> Assignee: SammiChen
> Labels: hdfs-ec-3.0-must-do
> Fix For: HDFS-7285
>
> Attachments: HADOOP-11798-v1.patch, HADOOP-11798-v2.patch,
> HADOOP-11798-v3.patch, HADOOP-11798-v4.patch
>
>
> Raw XOR coder is utilized in Reed-Solomon erasure coder in an optimization to
> recover only one erased block which is in most often case. It can also be
> used in HitchHiker coder. Therefore a native implementation of it would be
> deserved for performance gain.
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