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https://issues.apache.org/jira/browse/HDFS-7976?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14379931#comment-14379931
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Hudson commented on HDFS-7976:
------------------------------
FAILURE: Integrated in Hadoop-Hdfs-trunk #2075 (See
[https://builds.apache.org/job/Hadoop-Hdfs-trunk/2075/])
HDFS-7976. Update NFS user guide for mount option 'sync' to minimize or avoid
reordered writes. Contributed by Brandon Li (brandonli: rev
51f1f4937402c63392854443ccde18c1579e3348)
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/HdfsNfsGateway.md
> Update NFS user guide for mount option "sync" to minimize or avoid reordered
> writes
> -----------------------------------------------------------------------------------
>
> Key: HDFS-7976
> URL: https://issues.apache.org/jira/browse/HDFS-7976
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: documentation, nfs
> Affects Versions: 2.2.0
> Reporter: Brandon Li
> Assignee: Brandon Li
> Fix For: 2.7.0
>
> Attachments: HDFS-7976.001.patch, HDFS-7976.002.patch
>
>
> The mount option "sync" is critical. I observed that this mount option can
> minimize or avoid reordered writes. Mount option "sync" could have some
> negative performance impact on the file uploading. However, it makes the
> performance much more predicable and can also reduce the possibility of
> failures caused by file dumping.
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