[jira] [Commented] (HDFS-4594) WebHDFS open sets Content-Length header to what is specified by length parameter rather than how much data is actually returned.

["Hadoop QA (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HDFS-4594?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13744873#comment-13744873 ] 

Hadoop QA commented on HDFS-4594:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12598907/HDFS-4594.1.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 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}.  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:red}-1 core tests{color}.  The patch failed these unit tests in hadoop-hdfs-project/hadoop-hdfs:

                  org.apache.hadoop.hdfs.server.datanode.TestBlockRecovery

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

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/4858//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/4858//console

This message is automatically generated.
                
> WebHDFS open sets Content-Length header to what is specified by length parameter rather than how much data is actually returned. 
> ---------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-4594
>                 URL: https://issues.apache.org/jira/browse/HDFS-4594
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: webhdfs
>    Affects Versions: 2.0.3-alpha
>            Reporter: Arpit Gupta
>            Assignee: Chris Nauroth
>         Attachments: HDFS-4594.1.patch
>
>
> This was noticed on 2.0.3 alpha
> Lets say we have a file of length x
> We make an webhdfs open call specifying length=x+1
> The response of the call redirected to the datanode sets the content length header to value x+1 rather than x.
> Now this causes an error when the client tries to read the data.
> For the test i was using HttpResponse.getEntity().getContent()
> This failed with message "Premature end of Content-Length delimited message body (expected: 71898; received: 71897"
> This was not seen in hadoop 1 as we did not set the content length header.

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