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From newbie24 <shripri...@hotmail.com>
Subject Re: help to fix this issue
Date Wed, 07 Mar 2012 14:20:14 GMT

Is there a way to close all the existing connections in hadoop?

Please let  me know.




newbie24 wrote:
> 
> Hi,
> 
> I'm new to hadoop.
> 
> I'm trying to connect to hbase and accessing these records but I get this
> issue..
> 
> 
> 2012-03-06 16:56:03,923 WARN org.apache.zookeeper.ClientCnxn: Session 0x0
> for server null, unexpected error, closing socket connection and
> attempting reconnect
> java.net.ConnectException: Connection refused
>         at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
>         at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
>         at
> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1119)
> 2012-03-06 16:56:05,782 INFO org.apache.zookeeper.ClientCnxn: Opening
> socket connection to server localhost/127.0.0.1:2181
> 2012-03-06 16:56:05,783 WARN org.apache.zookeeper.ClientCnxn: Session 0x0
> for server null, unexpected error, closing socket connection and
> attempting reconnect
> java.net.ConnectException: Connection refused
>         at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
>         at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
>         at
> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1119)
> 2012-03-06 16:56:07,569 INFO org.apache.zookeeper.ClientCnxn: Opening
> socket connection to server localhost/127.0.0.1:2181
> 2012-03-06 16:56:07,570 WARN org.apache.zookeeper.ClientCnxn: Session 0x0
> for server null, unexpected error, closing socket connection and
> attempting reconnect
> java.net.ConnectException: Connection refused
> 
> **********************
> 
> When I access base and try to list the entries this is what I see..
> 
> 
> ERROR: org.apache.hadoop.hbase.ZooKeeperConnectionException: HBase is able
> to connect to ZooKeeper but the connection closes immediately. This could
> be a sign that the server has too many connections (30 is the default).
> Consider inspecting your ZK server logs for that error and then make sure
> you are reusing HBaseConfiguration as often as you can. See HTable's
> javadoc for more information.
> 
> 
> Can someone please help me...
> 
> Thanks
> 

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