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https://issues.apache.org/jira/browse/HDFS-762?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12776170#action_12776170
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Hadoop QA commented on HDFS-762:
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-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12424526/0001-corrected-balancer-constructor.patch
against trunk revision 834377.
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 4 new or modified tests.
-1 patch. The patch command could not apply the patch.
Console output:
http://hudson.zones.apache.org/hudson/job/Hdfs-Patch-h2.grid.sp2.yahoo.net/69/console
This message is automatically generated.
> Trying to start the balancer throws a NPE
> -----------------------------------------
>
> Key: HDFS-762
> URL: https://issues.apache.org/jira/browse/HDFS-762
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 0.21.0
> Reporter: Cristian Ivascu
> Fix For: 0.21.0
>
> Attachments: 0001-corrected-balancer-constructor.patch
>
>
> When trying to run the balancer, I get a NullPointerException:
> 2009-11-10 11:08:14,235 ERROR
> org.apache.hadoop.hdfs.server.balancer.Balancer:
> java.lang.NullPointerException
> at
> org.apache.hadoop.hdfs.server.namenode.BlockPlacementPolicy.getInstance(BlockPlacementPolicy.java:161)
> at
> org.apache.hadoop.hdfs.server.balancer.Balancer.checkReplicationPolicyCompatibility(Balancer.java:784)
> at
> org.apache.hadoop.hdfs.server.balancer.Balancer.<init>(Balancer.java:792)
> at
> org.apache.hadoop.hdfs.server.balancer.Balancer.main(Balancer.java:814)
> This happens when trying to use bin/start-balancer or bin/hdfs balancer
> -threshold 10
> The config files (hdfs-site and core-site) have as fs.default.name
> hdfs://namenode:9000.
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