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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (HBASE-2025) 0.20.2 accessed from older client throws UndeclaredThrowableException; frustrates rolling upgrade
Date Mon, 28 Dec 2009 21:39:29 GMT

     [ https://issues.apache.org/jira/browse/HBASE-2025?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jean-Daniel Cryans reassigned HBASE-2025:
-----------------------------------------

    Assignee: Jean-Daniel Cryans

> 0.20.2 accessed from older client throws UndeclaredThrowableException; frustrates rolling
upgrade
> -------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-2025
>                 URL: https://issues.apache.org/jira/browse/HBASE-2025
>             Project: Hadoop HBase
>          Issue Type: Bug
>            Reporter: stack
>            Assignee: Jean-Daniel Cryans
>            Priority: Blocker
>             Fix For: 0.20.3
>
>
> From the list:
> {code}
> After upgrading HBase from 0.20.0 to 0.20.2 I am getting following error
> message:
> java.lang.reflect.UndeclaredThrowableException
> at $Proxy2.getRegionInfo(Unknown Source)
> at
> org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRootRegion(HConnectionManager.java:931)
> at
> org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:573)
> at
> org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:549)
> at
> org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegionInMeta(HConnectionManager.java:623)
> at
> org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:582)
> at
> org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:549)
> at
> org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegionInMeta(HConnectionManager.java:623)
> at
> org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:586)
> at
> org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:549)
> at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:125)
> at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:103)
> at com.xxxx.OrderLoader$CustomerReducer.setup(OrderLoader.java:81)
> at org.apache.hadoop.mapreduce.Reducer.run(Reducer.java:172)
> at org.apache.hadoop.mapred.ReduceTask.runNewReducer(ReduceTask.java:563)
> at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:408)
> at org.apache.hadoop.mapred.Child.main(Child.java:170)
> Caused by: org.apache.hadoop.ipc.RemoteException: java.io.IOException:
> java.lang.NullPointerException
> at org.apache.hadoop.hbase.ipc.HBaseClient.call(HBaseClient.java:723)
> at org.apache.hadoop.hbase.ipc.HBaseRPC$Invoker.invoke(HBaseRPC.java:328)
> ... 17 more
> This is happening for the following line in my code:
> this.table = new HTable(new HBaseConfiguration(), tableName);
> This used to work flawlessly before, so seems like something changed in
> HBaseConfiguration, may be?  I am looking into this, but any pointers would
> be greatly appreciated.
> {code}
> We should figure what we broke.  Try fix for 0.20.3.  In future, as part of release,
try accessing cluster with an older client to ensure we've not done something that would frustrate
rolling upgrade.

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