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https://issues.apache.org/jira/browse/HADOOP-7753?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13412008#comment-13412008
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Kihwal Lee commented on HADOOP-7753:
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bq. btw, which jar pulled by webhdfs into Hadoop 1.x caused problems? we should
try to fix that too.
We've seen users having trouble with jersey, which was brought in by webhdfs.
For 1.x it is already broken, like Eli said. We tend to refrain from
introducing new dependencies and be conservative on upping versions. Since
users have adapted to the current broken status, changing (add/remove/upgrade)
them causes a lot of pain. :(
> 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, performance
> Affects Versions: 0.23.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Fix For: 0.23.0
>
> Attachments: HADOOP-7753.branch-1.patch, hadoop-7753.txt,
> hadoop-7753.txt, 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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