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https://issues.apache.org/jira/browse/HBASE-1121?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12662836#action_12662836
 ] 

stack commented on HBASE-1121:
------------------------------

This is on one of the regionservers that had been hosting root... 139... its 
being asked for the -ROOT- by 140 though its been restarted.

{code}2009-01-11 23:04:39,674 [IPC Server handler 0 on 60020] ERROR 
org.apache.hadoop.hbase.regionserver.HRegionServer: 
org.apache.hadoop.hbase.NotServingRegionException: -ROOT-,,0
2009-01-11 23:04:39,674 [IPC Server handler 0 on 60020] INFO 
org.apache.hadoop.ipc.HBaseServer: IPC Server handler 0 on 60020, call 
getClosestRowBefore([...@32d27bb0, [...@18b679e1, [...@73fbaf73) from 
XX.XX.XX.140:53563: error: org.apache.hadoop.hbase.NotServingRegionException: 
-ROOT-,,0
org.apache.hadoop.hbase.NotServingRegionException: -ROOT-,,0
        at 
org.apache.hadoop.hbase.regionserver.HRegionServer.getRegion(HRegionServer.java:2064)
        at 
org.apache.hadoop.hbase.regionserver.HRegionServer.getClosestRowBefore(HRegionServer.java:1545)
        at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:632)
        at 
org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:894){code}

On 140, 142 thinks it has the -ROOT-:

{code}
2009-01-11 23:22:27,344 [IPC Server handler 4 on 60020] INFO 
org.apache.hadoop.ipc.HBaseServer: IPC Server handler 4 on 60020, call 
getClosestRowBefore([...@10321250, [...@47504a7e, [...@684abac5) from 
XX.XX.XX.142:58471: error: org.apache.hadoop.hbase.NotServingRegionException: 
-ROOT-,,0
org.apache.hadoop.hbase.NotServingRegionException: -ROOT-,,0
        at 
org.apache.hadoop.hbase.regionserver.HRegionServer.getRegion(HRegionServer.java:2064)
        at 
org.apache.hadoop.hbase.regionserver.HRegionServer.getClosestRowBefore(HRegionServer.java:1545)
        at sun.reflect.GeneratedMethodAccessor17.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:632)
        at 
org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:894)
{code}


> Cluster confused about where -ROOT- is
> --------------------------------------
>
>                 Key: HBASE-1121
>                 URL: https://issues.apache.org/jira/browse/HBASE-1121
>             Project: Hadoop HBase
>          Issue Type: Bug
>         Environment: TRUNK trying to do big upload
>            Reporter: stack
>
> Each node in cluster is doing below:
> {code}
> 2009-01-11 20:52:22,739 [regionserver/0:0:0:0:0:0:0:0:60020.compactor] DEBUG 
> org.apache.hadoop.hbase.client.HConnectionManager$TableServers: Attempt 0 of 
> 10 failed with <org.apache.hadoop.hbase.NotServingRegionException: 
> org.apache.hadoop.hbase.NotServingRegionException: -ROOT-,,0
>         at 
> org.apache.hadoop.hbase.regionserver.HRegionServer.getRegion(HRegionServer.java:2064)
>         at 
> org.apache.hadoop.hbase.regionserver.HRegionServer.getClosestRowBefore(HRegionServer.java:1545)
>         at sun.reflect.GeneratedMethodAccessor17.invoke(Unknown Source)
>         at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:597)
>         at org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:632)
>         at 
> org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:894)
> >. Retrying after sleep of 20002009-01-11 20:52:22,742 
> >[regionserver/0:0:0:0:0:0:0:0:60020.compactor] DEBUG 
> >org.apache.hadoop.hbase.client.HConnectionManager$TableServers: Found ROOT 
> >REGION => {NAME => '-ROOT-,,0', STARTKEY => '', ENDKEY => '', ENCODED => 
> >70236052, TABLE => {{NAME => '-ROOT-', IS_ROOT => 'true', IS_META => 'true', 
> >FAMILIES => [{NAME => 'info', BLOOMFILTER => 'false', COMPRESSION => 'NONE', 
> >VERSIONS => '10', LENGTH => '2147483647', TTL => '-1', IN_MEMORY => 'false', 
> >BLOCKCACHE => 'true'}], INDEXES => []}}2009-01-11 20:52:24,759 
> >[regionserver/0:0:0:0:0:0:0:0:60020.compactor] DEBUG 
> >org.apache.hadoop.hbase.client.HConnectionManager$TableServers: Attempt 1 of 
> >10 failed with <org.apache.hadoop.hbase.NotServingRegionException: 
> >org.apache.hadoop.hbase.NotServingRegionException: -ROOT-,,0
>         at 
> org.apache.hadoop.hbase.regionserver.HRegionServer.getRegion(HRegionServer.java:2064)
>         at 
> org.apache.hadoop.hbase.regionserver.HRegionServer.getClosestRowBefore(HRegionServer.java:1545)
>         at sun.reflect.GeneratedMethodAccessor17.invoke(Unknown Source)
>         at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:597)
>         at org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:632)
>         at 
> org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:894)
> {code}
> I tried to close the root region and tripped over hbase-1120.
> So I killed the regionserver hosting -ROOT- but weirdly had no effect as 
> though the  regionservers' internal cache of -ROOT- location cannot be 
> changed.

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