[jira] Commented: (HADOOP-4398) fuse-dfs per FD context is not thread safe and can cause segfaults and corruptions

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

    [ https://issues.apache.org/jira/browse/HADOOP-4398?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12640031#action_12640031 ] 

Hadoop QA commented on HADOOP-4398:
-----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12392208/HADOOP-4398.1.txt
  against trunk revision 705073.

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

    +1 tests included.  The patch appears to include 18 new or modified tests.

    +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 Eclipse classpath. The patch retains Eclipse classpath integrity.

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

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

Test results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/3470/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/3470/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/3470/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/3470/console

This message is automatically generated.

> fuse-dfs per FD context is not thread safe and can cause segfaults and corruptions
> ----------------------------------------------------------------------------------
>
>                 Key: HADOOP-4398
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4398
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: contrib/fuse-dfs
>    Affects Versions: 0.20.0
>            Reporter: Pete Wyckoff
>            Assignee: Pete Wyckoff
>             Fix For: 0.20.0
>
>         Attachments: HADOOP-4398.1.txt
>
>
> this affects dfs_read and dfs_write and dfs_open dfs_release.
> people have seen corruptions in 0.18.1 on reads - hadoop-4397.
> In 0.19 since there is no global DFS handle, it is slightly different, but the same principles need to be applied and make the per FD context data (ie ptr to DFS, read buffer, ...) thread safe.
> I can't think of a way to add a reliable test case for this in the current framework, but should be sure to assert pre/post conditions wherever possible.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.