That is almost certainly a HBase jar version mismatch between the master and the client.
I had this problem once when the jars for my master and one regionserver were out of sync. - Andy > From: Ryan LeCompte <[email protected]> > Subject: Re: Region server memory requirements > To: [email protected] > Date: Friday, December 19, 2008, 3:53 PM > Hey Stack, > > Okay, I was able to get Hadoop 0.19 up and running with > Hbase-trunk. It seems to startup fine, however now when > I connect to the hbase shell and do a simple "list" or > try to create a table, I get the > following almost immediately in the hbase master log files: > > 2008-12-19 18:49:47,408 WARN > org.apache.hadoop.ipc.HBaseServer: Out of > Memory in server select > java.lang.OutOfMemoryError: Java heap space > at > org.apache.hadoop.hbase.ipc.HBaseRPC$Invocation.readFields(HBaseRPC.java:142) > at > org.apache.hadoop.hbase.ipc.HBaseServer$Connection.processData(HBaseServer.java:846) > at > org.apache.hadoop.hbase.ipc.HBaseServer$Connection.readAndProcess(HBaseServer.java:813) > at > org.apache.hadoop.hbase.ipc.HBaseServer$Listener.doRead(HBaseServer.java:399) > at > org.apache.hadoop.hbase.ipc.HBaseServer$Listener.run(HBaseServer.java:308) > 2008-12-19 18:49:49,888 INFO > org.apache.hadoop.hbase.master.BaseScanner: All 0 .META. > region(s) > scanned > > > Any ideas? > > Thanks, > Ryan
