Today i found this problem after restarting hbase:
2010-10-23 20:16:17,882 DEBUG
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation:
Lookedup root region location,
connection=org.apache.hadoop.hbase.client.HConnectionManager$HConnectionIm
2010-10-23 20:16:17,890 DEBUG
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation:
Cached location for .META.,,1.1028785192 is
db2a.goldenline.pl:60020
2010-10-23 20:16:18,432 FATAL org.apache.hadoop.hbase.master.HMaster:
Unhandled exception. Starting
shutdown.
java.lang.NullPointerException
at
org.apache.hadoop.hbase.util.Writables.getWritable(Writables.java:75)
at
org.apache.hadoop.hbase.util.Writables.getHRegionInfo(Writables.java:119)
at
org.apache.hadoop.hbase.client.MetaScanner$1.processRow(MetaScanner.java:188)
at
org.apache.hadoop.hbase.client.MetaScanner.metaScan(MetaScanner.java:157)
at
org.apache.hadoop.hbase.client.MetaScanner.metaScan(MetaScanner.java:69)
at
org.apache.hadoop.hbase.client.MetaScanner.metaScan(MetaScanner.java:54)
at
org.apache.hadoop.hbase.client.MetaScanner.listAllRegions(MetaScanner.java:195)
at
org.apache.hadoop.hbase.master.AssignmentManager.assignAllUserRegions(AssignmentManager.java:1048)
at
org.apache.hadoop.hbase.master.HMaster.finishInitialization(HMaster.java:379)
at
org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:265)
2010-10-23 20:16:18,433 INFO org.apache.hadoop.hbase.master.HMaster:
Aborting
2010-10-23 20:16:18,433 DEBUG org.apache.hadoop.hbase.master.HMaster:
Stopping service threads
