Nikhil Mulley created HDFS-5646:
-----------------------------------
Summary: 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)
--
This message was sent by Atlassian JIRA
(v6.1.4#6159)
