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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6094) The same block can be counted twice towards safe mode threshold
Date Sat, 15 Mar 2014 00:14:52 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6094?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13935859#comment-13935859

Hadoop QA commented on HDFS-6094:

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  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 2 new or modified
test files.

      {color:red}-1 javac{color}.  The applied patch generated 1540 javac compiler warnings
(more than the trunk's current 1531 warnings).

    {color:green}+1 javadoc{color}.  There were no new javadoc 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:green}+1 core tests{color}.  The patch passed unit tests in hadoop-hdfs-project/hadoop-hdfs.

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

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/6407//testReport/
Javac warnings: https://builds.apache.org/job/PreCommit-HDFS-Build/6407//artifact/trunk/patchprocess/diffJavacWarnings.txt
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/6407//console

This message is automatically generated.

> The same block can be counted twice towards safe mode threshold
> ---------------------------------------------------------------
>                 Key: HDFS-6094
>                 URL: https://issues.apache.org/jira/browse/HDFS-6094
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 2.4.0
>            Reporter: Arpit Agarwal
>            Assignee: Arpit Agarwal
>         Attachments: HDFS-6094.03.patch, HDFS-6904.01.patch, TestHASafeMode-output.txt
> {{BlockManager#addStoredBlock}} can cause the same block can be counted towards safe
mode threshold. We see this manifest via {{TestHASafeMode#testBlocksAddedWhileStandbyIsDown}}
failures on Ubuntu. More details to follow in a comment.
> Exception details:
> {code}
>   Time elapsed: 12.874 sec  <<< FAILURE!
> java.lang.AssertionError: Bad safemode status: 'Safe mode is ON. The reported blocks
7 has reached the threshold 0.9990 of total blocks 6. The number of live datanodes 3 has reached
the minimum number 0. Safe mode will be turned off automatically in 28 seconds.'
>         at org.junit.Assert.fail(Assert.java:93)
>         at org.junit.Assert.assertTrue(Assert.java:43)
>         at org.apache.hadoop.hdfs.server.namenode.ha.TestHASafeMode.assertSafeMode(TestHASafeMode.java:493)
>         at org.apache.hadoop.hdfs.server.namenode.ha.TestHASafeMode.testBlocksAddedWhileStandbyIsDown(TestHASafeMode.java:660)
> {code}

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