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https://issues.apache.org/jira/browse/HDFS-6097?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13933832#comment-13933832
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Chris Nauroth commented on HDFS-6097:
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Thanks for posting v4. Were you also going to put in the comment that copying
{{pos}} to {{curPos}} is an optimization? +1 after that, pending Jenkins run.
> zero-copy reads are incorrectly disabled on file offsets above 2GB
> ------------------------------------------------------------------
>
> Key: HDFS-6097
> URL: https://issues.apache.org/jira/browse/HDFS-6097
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs-client
> Affects Versions: 2.4.0
> Reporter: Colin Patrick McCabe
> Assignee: Colin Patrick McCabe
> Attachments: HDFS-6097.003.patch, HDFS-6097.004.patch
>
>
> Zero-copy reads are incorrectly disabled on file offsets above 2GB due to
> some code that is supposed to disable zero-copy reads on offsets in block
> files greater than 2GB (because MappedByteBuffer segments are limited to that
> size).
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