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https://issues.apache.org/jira/browse/HDFS-5646?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Steve Loughran resolved HDFS-5646.
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Resolution: Fixed
HI, I'm afraid you are going to have to take this up with cloudera -if there is
a problem in the hadoop codebase then they can escalate it over here
Closing as invalid per policy
[http://wiki.apache.org/hadoop/InvalidJiraIssues]
> Exceptions during HDFS failover
> -------------------------------
>
> Key: HDFS-5646
> URL: https://issues.apache.org/jira/browse/HDFS-5646
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: ha
> Reporter: Nikhil Mulley
>
> Hi, In our HDFS HA, I see the following excpetions when I try to failback. I
> have an auto failover mechanism enabled. Although the failback operation
> succeeds, the exceptions and the return status of 255 tend to worry me
> (because I cannot script this if I needed to) Please let me know if this is
> anything that is known and easily resolvable.
> I am using Cloudera Hadoop 4.4.0, if that helps.Please let me know if I need
> to open this ticket with CDH Jira, instead.
> Thanks.
> sudo -u hdfs hdfs haadmin -failover nn2 nn1
> Operation failed: Unable to become active. Service became unhealthy while
> trying to failover. at
> org.apache.hadoop.ha.ZKFailoverController.doGracefulFailover(ZKFailoverController.java:652)
> at
> org.apache.hadoop.ha.ZKFailoverController.access$400(ZKFailoverController.java:58)
> at
> org.apache.hadoop.ha.ZKFailoverController$3.run(ZKFailoverController.java:591)
> at
> org.apache.hadoop.ha.ZKFailoverController$3.run(ZKFailoverController.java:588)
> at java.security.AccessController.doPrivileged(Native Method) at
> javax.security.auth.Subject.doAs(Subject.java:396) at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1408)
> at
> org.apache.hadoop.ha.ZKFailoverController.gracefulFailoverToYou(ZKFailoverController.java:588)
> at
> org.apache.hadoop.ha.ZKFCRpcServer.gracefulFailover(ZKFCRpcServer.java:94) at
> org.apache.hadoop.ha.protocolPB.ZKFCProtocolServerSideTranslatorPB.gracefulFailover(ZKFCProtocolServerSideTranslatorPB.java:61)
> at
> org.apache.hadoop.ha.proto.ZKFCProtocolProtos$ZKFCProtocolService$2.callBlockingMethod(ZKFCProtocolProtos.java:1351)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:453)
> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1002) at
> org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1751) at
> org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1747) at
> java.security.AccessController.doPrivileged(Native Method) at
> javax.security.auth.Subject.doAs(Subject.java:396) at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1408)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1745)
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