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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-470) libhdfs should handle 0-length reads from FSInputStream correctly
Date Wed, 11 Jul 2012 01:00:57 GMT

    [ https://issues.apache.org/jira/browse/HDFS-470?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13411118#comment-13411118
] 

Hadoop QA commented on HDFS-470:
--------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12535943/HDFS-470.002.patch
  against trunk revision .

    +1 @author.  The patch does not contain any @author tags.

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 eclipse:eclipse.  The patch built with eclipse:eclipse.

    -1 findbugs.  The patch appears to introduce 2 new Findbugs (version 1.3.9) warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit
warnings.

    +1 core tests.  The patch passed unit tests in hadoop-hdfs-project/hadoop-hdfs.

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/2780//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HDFS-Build/2780//artifact/trunk/patchprocess/newPatchFindbugsWarningshadoop-hdfs.html
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/2780//console

This message is automatically generated.
                
> libhdfs should handle 0-length reads from FSInputStream correctly
> -----------------------------------------------------------------
>
>                 Key: HDFS-470
>                 URL: https://issues.apache.org/jira/browse/HDFS-470
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Pete Wyckoff
>            Assignee: Colin Patrick McCabe
>            Priority: Minor
>         Attachments: HDFS-470.001.patch, HDFS-470.002.patch
>
>
> libhdfs changes Java read semantics to posix semantics. As such, if Hadoop ever returns
0 bytes read, libhdfs should return -1 and set errno = EINTER.

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