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https://issues.apache.org/jira/browse/HADOOP-7753?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13136574#comment-13136574
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Nathan Roberts commented on HADOOP-7753:
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Thanks Todd for the answers. I'm fine with not actively removing cancel'ed
requests. I kind of figured the system would have to be in some pretty dire
straits for this to ever matter anyway.
+1 for the patch.
> Support fadvise and sync_data_range in NativeIO, add ReadaheadPool class
> ------------------------------------------------------------------------
>
> Key: HADOOP-7753
> URL: https://issues.apache.org/jira/browse/HADOOP-7753
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: io, native
> Affects Versions: 0.23.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Attachments: hadoop-7753.txt, hadoop-7753.txt, hadoop-7753.txt
>
>
> This JIRA adds JNI wrappers for sync_data_range and posix_fadvise. It also
> implements a ReadaheadPool class for future use from HDFS and MapReduce.
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