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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7694) FSDataInputStream should support "unbuffer"
Date Sat, 07 Feb 2015 00:14:35 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7694?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14310259#comment-14310259
] 

Hadoop QA commented on HDFS-7694:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12697115/HDFS-7694.003.patch
  against trunk revision 4c48432.

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

    {color:green}+1 tests included{color}.  The patch appears to include 1 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}.  There were no new javadoc 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
2.0.3) warnings.

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

    {color:red}-1 core tests{color}.  The patch failed these unit tests in hadoop-common-project/hadoop-common
hadoop-hdfs-project/hadoop-hdfs:

                  org.apache.hadoop.ipc.TestCallQueueManager

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/9466//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/9466//console

This message is automatically generated.

> FSDataInputStream should support "unbuffer"
> -------------------------------------------
>
>                 Key: HDFS-7694
>                 URL: https://issues.apache.org/jira/browse/HDFS-7694
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 2.7.0
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>         Attachments: HDFS-7694.001.patch, HDFS-7694.002.patch, HDFS-7694.003.patch
>
>
> For applications that have many open HDFS (or other Hadoop filesystem) files, it would
be useful to have an API to clear readahead buffers and sockets.  This could be added to the
existing APIs as an optional interface, in much the same way as we added setReadahead / setDropBehind
/ etc.



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