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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5543) fix narrow race condition in TestPathBasedCacheRequests
Date Thu, 21 Nov 2013 09:18:37 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5543?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13828625#comment-13828625
] 

Hadoop QA commented on HDFS-5543:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12615067/HDFS-5543.001.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:red}-1 javadoc{color}.  The javadoc tool appears to have generated -14 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.balancer.TestBalancerWithNodeGroup

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

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/5520//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/5520//console

This message is automatically generated.

> fix narrow race condition in TestPathBasedCacheRequests
> -------------------------------------------------------
>
>                 Key: HDFS-5543
>                 URL: https://issues.apache.org/jira/browse/HDFS-5543
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: test
>    Affects Versions: 3.0.0
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>         Attachments: HDFS-5543.001.patch
>
>
> TestPathBasedCacheRequests has a narrow race condition in testWaitForCachedReplicasInDirectory
where an assert checking the number of bytes cached may fail.  The reason is because waitForCachedBlock
looks at the NameNode data structures directly to see how many replicas are cached, but the
scanner asynchronously updates the cache entries with this information.



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