surendra singh lilhore created HADOOP-10722:
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Summary: Standby NN continuing as standby when active NN machine
got shutdown.
Key: HADOOP-10722
URL: https://issues.apache.org/jira/browse/HADOOP-10722
Project: Hadoop Common
Issue Type: Bug
Components: auto-failover, ha
Affects Versions: 2.4.0
Reporter: surendra singh lilhore
I have HA cluster with 3 ZK, 3 QJM.
My Active NN machine got shutdown, but still my standby NN is standby only.
It should be active
ZKFC logs
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2014-06-19 13:39:30,810 INFO org.apache.hadoop.ha.NodeFencer: ====== Beginning
Service Fencing Process... ======
2014-06-19 13:39:30,810 INFO org.apache.hadoop.ha.NodeFencer: Trying method
1/1: org.apache.hadoop.ha.SshFenceByTcpPort(null)
2014-06-19 13:39:30,811 INFO org.apache.hadoop.ha.SshFenceByTcpPort: Connecting
to host-10-18-40-101...
2014-06-19 13:39:30,811 INFO org.apache.hadoop.ha.SshFenceByTcpPort.jsch:
Connecting to host-10-18-40-101 port 22
2014-06-19 13:39:33,814 WARN org.apache.hadoop.ha.SshFenceByTcpPort: Unable to
connect to host-10-18-40-101 as user myuser
com.jcraft.jsch.JSchException: java.net.NoRouteToHostException: No route to host
at com.jcraft.jsch.Util.createSocket(Util.java:386)
at com.jcraft.jsch.Session.connect(Session.java:182)
at
org.apache.hadoop.ha.SshFenceByTcpPort.tryFence(SshFenceByTcpPort.java:100)
at org.apache.hadoop.ha.NodeFencer.fence(NodeFencer.java:97)
at
org.apache.hadoop.ha.ZKFailoverController.doFence(ZKFailoverController.java:521)
at
org.apache.hadoop.ha.ZKFailoverController.fenceOldActive(ZKFailoverController.java:494)
at
org.apache.hadoop.ha.ZKFailoverController.access$1100(ZKFailoverController.java:59)
at
org.apache.hadoop.ha.ZKFailoverController$ElectorCallbacks.fenceOldActive(ZKFailoverController.java:837)
at
org.apache.hadoop.ha.ActiveStandbyElector.fenceOldActive(ActiveStandbyElector.java:901)
at
org.apache.hadoop.ha.ActiveStandbyElector.becomeActive(ActiveStandbyElector.java:800)
at
org.apache.hadoop.ha.ActiveStandbyElector.processResult(ActiveStandbyElector.java:415)
at
org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:596)
at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:495)
2014-06-19 13:39:33,814 WARN org.apache.hadoop.ha.NodeFencer: Fencing method
org.apache.hadoop.ha.SshFenceByTcpPort(null) was unsuccessful.
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