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https://issues.apache.org/jira/browse/HDFS-8901?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kai Zheng updated HDFS-8901:
----------------------------
    Description: Native erasure coder prefers to direct ByteBuffer for 
performance consideration. To prepare for it, this change uses ByteBuffer 
through the codes in implementing striping position read. It will also fix 
avoiding unnecessary data copying between striping read chunk buffers and 
decode input buffers.  (was: Native erasure coder prefers to direct ByteBuffer 
for performance consideration. To prepare for it, this change uses ByteBuffer 
through the codes in implementing striping position read. )

> Use ByteBuffer in striping positional read
> ------------------------------------------
>
>                 Key: HDFS-8901
>                 URL: https://issues.apache.org/jira/browse/HDFS-8901
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Kai Zheng
>            Assignee: Kai Zheng
>
> Native erasure coder prefers to direct ByteBuffer for performance 
> consideration. To prepare for it, this change uses ByteBuffer through the 
> codes in implementing striping position read. It will also fix avoiding 
> unnecessary data copying between striping read chunk buffers and decode input 
> buffers.



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