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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2186) DN volume failures on startup are not counted
Date Fri, 12 Aug 2011 05:04:27 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2186?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13083933#comment-13083933
] 

Hadoop QA commented on HDFS-2186:
---------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12490213/hdfs-2186-2.patch
  against trunk revision 1156860.

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

    +1 tests included.  The patch appears to include 3 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 (version 1.3.9) warnings.

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

    -1 core tests.  The patch failed these core unit tests:
                  org.apache.hadoop.hdfs.server.blockmanagement.TestReplicationPolicy
                  org.apache.hadoop.hdfs.server.datanode.TestBlockRecovery
                  org.apache.hadoop.hdfs.server.datanode.TestDataDirs
                  org.apache.hadoop.hdfs.server.namenode.TestCheckpoint
                  org.apache.hadoop.hdfs.server.namenode.TestGetImageServlet
                  org.apache.hadoop.hdfs.server.namenode.TestINodeFile
                  org.apache.hadoop.hdfs.server.namenode.TestNNLeaseRecovery
                  org.apache.hadoop.hdfs.server.namenode.TestNNThroughputBenchmark
                  org.apache.hadoop.hdfs.server.namenode.TestValidateConfigurationSettings
                  org.apache.hadoop.hdfs.TestDFSRollback
                  org.apache.hadoop.hdfs.TestHDFSServerPorts

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

    +1 system test framework.  The patch passed system test framework compile.

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/1094//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HDFS-Build/1094//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/1094//console

This message is automatically generated.

> DN volume failures on startup are not counted
> ---------------------------------------------
>
>                 Key: HDFS-2186
>                 URL: https://issues.apache.org/jira/browse/HDFS-2186
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: data-node
>            Reporter: Eli Collins
>            Assignee: Eli Collins
>             Fix For: 0.23.0
>
>         Attachments: hdfs-2186-1.patch, hdfs-2186-2.patch
>
>
> Volume failures detected on startup are not currently counted/reported as such. Eg if
you have configured 4 volumes, 2 tolerated failures, and you start a DN with two failed volumes
it will come up and report (to the NN) no failed volumes. The DN will still be able to tolerate
2 additional volume failures (ie it's OK with no valid volumes remaining). The intent of the
volume failure toleration config value is that if more than this # of volumes of the total
set of configured volumes have failed the DN should shutdown, therefore volume failures detected
on startup should count against this quota. 

--
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