ambari hdfs rebalance failed (RpcNoSuchMethodException)

[#1]

Hi, All

I met a problem when rebalancing hdfs as follows: 
ambari : 2.1.2.1

Is there anyone have an idea about this? 

and where is the script of 'start-balancer.sh' ? 

.....
16/05/23 11:01:21 INFO balancer.Balancer: Need to move 14.26 TB to make the cluster balanced.
org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.ipc.RpcNoSuchMethodException): Unknown method isUpgradeFinalized called on org.apache.hadoop.hdfs.server.protocol.NamenodeProtocol protocol.
	at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:575)
	at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1026)
	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2013)
	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2009)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:415)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1642)
	at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2007)
.  Exiting ...
May 23, 2016 11:01:21 AM          0                  0 B                -1 B               -1 B
May 23, 2016 11:01:21 AM Balancing took 1.618 seconds

Thanks in advance 
Park

[#2 · Accepted solution]

@Young-Geun Park

Looks like you are hitting a bug.

https://issues.apache.org/jira/browse/AMBARI-13373

WORKAROUND:

Use the configs.sh utility on the Ambari Server to delete the extra property.

Important: Only perform this procedure if your cluster is running NameNode HA and you are experiencing the HDFS balancer issue.

/var/lib/ambari-server/resources/scripts/configs.sh -u <admin.user> -p <admin.password> delete

<ambari.server> <cluster.name> hdfs-site “dfs.namenode.rpc-address”

Where

admin.user and

admin.password are credentials for an Ambari Administrator,

ambari.server is the Ambari Server host and

cluster.name is the name of your cluster.

[#3]

thanks for your reply in advance.

https://docs.hortonworks.com/HDPDocuments/Ambari-2.2.0.0/bk_Ambari_Users_Guide/content/_modify_hdfs_...

Is there any impact on hadoop operations after "config.sh delete ... hdfs-site “dfs.namenode.rpc-address" command runs?

[#4]

@Young-Geun Park

No, we need to restart couple of services I guess.