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https://issues.apache.org/jira/browse/HADOOP-3640?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12608056#action_12608056
 ] 

Hadoop QA commented on HADOOP-3640:
-----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12384660/hadoop-3640.patch
  against trunk revision 671385.

    +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 tests are needed for this patch.

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

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

    +1 findbugs.  The patch does not introduce any new Findbugs warnings.

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

    -1 core tests.  The patch failed core unit tests.

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

Test results: 
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2735/testReport/
Findbugs warnings: 
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2735/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: 
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2735/artifact/trunk/build/test/checkstyle-errors.html
Console output: 
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2735/console

This message is automatically generated.

> NativeS3FsInputStream read() method for reading a single byte is incorrect
> --------------------------------------------------------------------------
>
>                 Key: HADOOP-3640
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3640
>             Project: Hadoop Core
>          Issue Type: Bug
>    Affects Versions: 0.18.0
>            Reporter: Tom White
>            Assignee: Tom White
>         Attachments: hadoop-3640.patch
>
>
> From Albert Chern:
> I think there may be a bug in the read() method of NativeS3InputStream, which 
> looks like this:
> {code}
> public synchronized int read() throws IOException {
>     int result = in.read();
>     if (result > 0) {
>         pos += result;
>     }
>     return result;
> }
> {code}
> The return value of InputStream.read() should be the next byte in the range 0 
> to 255, or -1 if there are no more bytes.  So shouldn't this method look 
> something like this?
> {code}
> public synchronized int read() throws IOException {
>     int result = in.read();
>     if (result > -1) {
>         pos ++;
>     }
>     return result;
> }
> {code}

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