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Date: Tue, 12 Jun 2012 01:56:43 +0000 (UTC)
From: "Hudson (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Commented] (HDFS-3052) HA: hdfs balancer throws
 StandbyException
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    [ https://issues.apache.org/jira/browse/HDFS-3052?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13293272#comment-13293272 ] 

Hudson commented on HDFS-3052:
------------------------------

Integrated in Hadoop-Common-trunk-Commit #2342 (See [https://builds.apache.org/job/Hadoop-Common-trunk-Commit/2342/])
    HDFS-3052. Change INodeFile and INodeFileUnderConstruction to package private. (Revision 1348998)

     Result = SUCCESS
szetszwo : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1348998
Files : 
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockInfo.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeFile.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeFileUnderConstruction.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestPersistBlocks.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestBlockManager.java

                
> HA: hdfs balancer throws StandbyException
> -----------------------------------------
>
>                 Key: HDFS-3052
>                 URL: https://issues.apache.org/jira/browse/HDFS-3052
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: ha
>    Affects Versions: 0.24.0
>            Reporter: Stephen Chu
>         Attachments: balancer_styx01, balancer_styx02
>
>
> The hdfs balancer tool throws a StandbyException.
> Originally, styx01 hosts the active NN and styx02 hosts the standby NN.
> After failing over from styx01 NN to styx02 NN, the _hdfs balancer_ command thows a StandbyException:
> {noformat}
> 12/03/06 00:34:01 INFO balancer.Balancer: namenodes = {ha-nn-uri={nn1=styx01.sf.cloudera.com/172.29.5.192:12020, nn2=styx02.sf.cloudera.com/172.29.5.193:12020}}
> 12/03/06 00:34:01 INFO balancer.Balancer: p         = Balancer.Parameters[BalancingPolicy.Node, threshold=10.0]
> Time Stamp               Iteration#  Bytes Already Moved  Bytes Left To Move  Bytes Being Moved
> org.apache.hadoop.ipc.StandbyException: org.apache.hadoop.ipc.StandbyException: Operation category WRITE is not supported in state standby
> 	at org.apache.hadoop.hdfs.server.namenode.ha.StandbyState.checkOperation(StandbyState.java:87)
> 	at org.apache.hadoop.hdfs.server.namenode.NameNode$NameNodeHAContext.checkOperation(NameNode.java:1028)
> 	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkOperation(FSNamesystem.java:653)
> 	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startFile(FSNamesystem.java:1522)
> 	at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.create(NameNodeRpcServer.java:437)
> 	at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.create(ClientNamenodeProtocolServerSideTranslatorPB.java:254)
> 	at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java:42590)
> 	at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:448)
> 	at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:878)
> 	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1622)
> 	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1618)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at javax.security.auth.Subject.doAs(Subject.java:396)
> 	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1177)
> 	at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1616)
> .  Exiting ...
> Balancing took 650.0 milliseconds
> {noformat}
> After failing back so that active is on styx01 and standby is on styx02, the _hdfs balancer_ command runs without exception.
> Failing over again results in the same StandbyException.
> Service ID nn1 corresponds to node styx01, and nn2 corresponds to styx02. Console output from styx01 and styx02 is attached.

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