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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5364) Add OpenFileCtx cache
Date Wed, 06 Nov 2013 00:48:17 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5364?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13814459#comment-13814459
] 

Hadoop QA commented on HDFS-5364:
---------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12612290/HDFS-5364.007.patch
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 3 new or modified
test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
1.3.9) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in hadoop-common-project/hadoop-nfs
hadoop-hdfs-project/hadoop-hdfs-nfs.

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/5339//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/5339//console

This message is automatically generated.

> Add OpenFileCtx cache
> ---------------------
>
>                 Key: HDFS-5364
>                 URL: https://issues.apache.org/jira/browse/HDFS-5364
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: nfs
>            Reporter: Brandon Li
>            Assignee: Brandon Li
>         Attachments: HDFS-5364.001.patch, HDFS-5364.002.patch, HDFS-5364.003.patch, HDFS-5364.004.patch,
HDFS-5364.005.patch, HDFS-5364.006.patch, HDFS-5364.007.patch
>
>
> NFS gateway can run out of memory when the stream timeout is set to a relatively long
period(e.g., >1 minute) and user uploads thousands of files in parallel.  Each stream DFSClient
creates a DataStreamer thread, and will eventually run out of memory by creating too many
threads.
> NFS gateway should have a OpenFileCtx cache to limit the total opened files. 



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