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https://issues.apache.org/jira/browse/HDFS-3052?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Stephen Chu resolved HDFS-3052.
-------------------------------
Resolution: Duplicate
Just tested on a version with HDFS-2979 fix, and the problem has already been
resolved. Resolving as duplicate.
> 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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