[jira] [Resolved] (HDFS-5646) Exceptions during HDFS failover

["Steve Loughran (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDFS-5646?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steve Loughran resolved HDFS-5646.
----------------------------------

    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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