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Posted to user@hbase.apache.org by Vivek Krishna <vi...@gmail.com> on 2011/04/08 23:22:05 UTC

Decommission a Region Server

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

Re: Decommission a Region Server

Posted by Stack <st...@duboce.net>.
On Fri, Apr 8, 2011 at 2:22 PM, Vivek Krishna <vi...@gmail.com> wrote:
> Is there a procedure to decommission a region server?
>

See http://hbase.apache.org/book.html#decommission (Requires hbase 0.90.2).
St.Ack

Re: Decommission a Region Server

Posted by Jean-Daniel Cryans <jd...@apache.org>.
See https://issues.apache.org/jira/browse/HBASE-3071

On Fri, Apr 8, 2011 at 2:22 PM, Vivek Krishna <vi...@gmail.com> wrote:
> 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
>