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From Vivek Krishna <vivekris...@gmail.com>
Subject Decommission a Region Server
Date Fri, 08 Apr 2011 21:22:05 GMT
Is there a procedure to decommission a region server?

If I just kill a region server process, the master tries to reconnect again
and again and the master logs looks like this


11/04/08 21:08:35 WARN util.FSUtils: Waited 2533953ms for lease recovery on
hdfs://
xxx.compute-1.amazonaws.com:8020/hbase/.logs/xxx.internal,60020,1302293217355/ip-1xx2-119.ec2.internal%3A60020.1302293256478:org.apache.hadoop.hdfs.protocol.AlreadyBeingCreatedException:
failed
to create file
/hbase/.logs/ip-xx.internal,60020,1302293217355/ip-10-dd9.ec2.internal%3A60020.1302293256478
for DFSClient_hb_m_ip-xx2.internal:60000_1302293244804 on client
10.17.197.48, because this file is already being created by NN_Recovery on
ad
        at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startFileInternal(FSNamesystem.java:1196)
        at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.appendFile(FSNamesystem.java:1284)
        at
org.apache.hadoop.hdfs.server.namenode.NameNode.append(NameNode.java:596)
        at sun.reflect.GeneratedMethodAccessor18.invoke(Unknown Source)
        at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:557)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1416)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1412)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:396)
        at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1115)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1410)


Viv

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