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From Matthew LeMieux <...@mlogiciels.com>
Subject HBase crash, need help getting back up
Date Thu, 09 Sep 2010 01:00:50 GMT
My HBase cluster just crashed.   One of the Region servers stopped (do not yet know why). 
After restarting it, the cluster seemed a but wobbly, so I decided to shutdown everything,
and restart fresh.  I did so (including zookeeper and HDFS). 

Upon restart, I'm getting the following message in the Master's log file repeating continuously
with the number of ms waited counting up.  

2010-09-09 00:54:58,406 WARN org.apache.hadoop.hbase.util.FSUtils: Waited 69188ms for lease
recovery on hdfs://domU-12-31-39-18-12-05.compute-1.internal:9000/hbase/.logs/domU-12-31-39-0C-38-31.compute-1.internal,60020,1283905848540/
failed to create file /hbase/.logs/domU-12-31-39-0C-38-31.compute-1.internal,60020,1283905848540/
for DFSClient_hb_m_10.104.37.247:60000 on client because current leaseholder
is trying to recreate file.
        at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startFileInternal(FSNamesystem.java:1068)
        at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.appendFile(FSNamesystem.java:1181)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.append(NameNode.java:422)
        at sun.reflect.GeneratedMethodAccessor6.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$Server.call(RPC.java:512)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:968)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:964)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:396)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:962)

The region servers are waiting with this being the final message in their log file: 

2010-09-09 00:53:49,111 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Telling master
at that we are up

I've  been using this version for a little under a week without incident (http://people.apache.org/~jdcryans/hbase-0.89.20100830-candidate-1/

The HDFS comes from CDH3.  

Does anybody have any ideas on what I can do to get back up and running?

Thank you, 


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