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From "yoav.morag" <y...@corrigon.com>
Subject problem restarting 0.18
Date Thu, 25 Sep 2008 15:09:50 GMT

I am experiencing problems when restarting a cluster with hadoop/hbase
0.18.0. hadoop restarts OK, however hbase regionservers all exit with the
message :
Exception in thread "regionserver/0:0:0:0:0:0:0:0:60020"
java.lang.NullPointerException
	at
org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:448)
	at java.lang.Thread.run(Thread.java:619)
strange enough, the said line appears to indicate log is null, however a log
is created and messages are written into it...
the restart scenario is very simple, and it happens even with a clean
database , on a newly formatted FS. I have also checked no ghost processes
exist before start. 

 "$INSTALLDIR/$HBASE/bin/stop-hbase.sh;$INSTALLDIR/$HADOOP/bin/stop-dfs.sh;"

"$INSTALLDIR/$HADOOP/bin/start-dfs.sh;$INSTALLDIR/$HBASE/bin/start-hbase.sh;"

any ideas ? 
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