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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7374) Allow decommissioning of dead DataNodes
Date Tue, 18 Nov 2014 01:08:35 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7374?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14215534#comment-14215534
] 

Hadoop QA commented on HDFS-7374:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12682000/HDFS-7374.003.patch
  against trunk revision 351c556.

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 3 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}.  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
2.0.3) 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.TestLargeBlock

                                      The following test timeouts occurred in hadoop-hdfs-project/hadoop-hdfs:

org.apache.hadoop.hdfs.TestDatanodeBlockScanner

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

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/8765//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/8765//console

This message is automatically generated.

> Allow decommissioning of dead DataNodes
> ---------------------------------------
>
>                 Key: HDFS-7374
>                 URL: https://issues.apache.org/jira/browse/HDFS-7374
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Zhe Zhang
>            Assignee: Zhe Zhang
>         Attachments: HDFS-7374-001.patch, HDFS-7374-002.patch, HDFS-7374.003.patch
>
>
> We have seen the use case of decommissioning DataNodes that are already dead or unresponsive,
and not expected to rejoin the cluster.
> The logic introduced by HDFS-6791 will mark those nodes as {{DECOMMISSION_INPROGRESS}},
with a hope that they can come back and finish the decommission work. If an upper layer application
is monitoring the decommissioning progress, it will hang forever.



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