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https://issues.apache.org/jira/browse/HDFS-5171?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13805222#comment-13805222
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Hudson commented on HDFS-5171:
------------------------------
SUCCESS: Integrated in Hadoop-Yarn-trunk #373 (See
[https://builds.apache.org/job/Hadoop-Yarn-trunk/373/])
HDFS-5171. NFS should create input stream for a file and try to share it with
multiple read requests. Contributed by Haohui Mai (brandonli:
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1535586)
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs-nfs/src/main/java/org/apache/hadoop/hdfs/nfs/nfs3/DFSClientCache.java
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs-nfs/src/main/java/org/apache/hadoop/hdfs/nfs/nfs3/RpcProgramNfs3.java
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs-nfs/src/test/java/org/apache/hadoop/hdfs/nfs/nfs3/TestDFSClientCache.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
> NFS should create input stream for a file and try to share it with multiple
> read requests
> -----------------------------------------------------------------------------------------
>
> Key: HDFS-5171
> URL: https://issues.apache.org/jira/browse/HDFS-5171
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: nfs
> Reporter: Brandon Li
> Assignee: Haohui Mai
> Fix For: 2.2.1
>
> Attachments: HDFS-5171.000.patch, HDFS-5171.001.patch
>
>
> Currently, NFS creates an input steam for each read request and closes it
> after the request is served. With lots of read request, the overhead is
> significant.
> Like for write request, NFS should create input stream for a file and try to
> share it with multiple read requests. The stream can be closed if there is no
> read request for a certain amount of time (e.g., 10 sec).
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