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From Stack <st...@duboce.net>
Subject Re: NPE after restarting
Date Sat, 23 Oct 2010 20:17:32 GMT
If you restart master again, still NPE?  What version of hbase?  So,
your meta has an empty info:regioninfo cell.  When you do ./bin/hbase,
is there an hbck to run?  If so, run it and what does it report?
StAck

On Sat, Oct 23, 2010 at 11:21 AM, Sebastian Bauer <admin@ugame.net.pl> wrote:
> 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
>

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