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Posted to issues@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2012/05/08 21:27:49 UTC

[jira] [Commented] (HBASE-5962) interop issue: RowMutations should be added at the end in HbaseObjectWriteable class

    [ https://issues.apache.org/jira/browse/HBASE-5962?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13270747#comment-13270747 ] 

stack commented on HBASE-5962:
------------------------------

Is this a 0.89fb issue only Kannan?

You might be interested in this that went into trunk recently:

{code}
commit 85a39b49eb24f99479d06dc3204bd7d21f4b63da
Author: Lars Hofhansl <la...@apache.org>
Date:   Fri Feb 24 22:29:40 2012 +0000

    HBASE-5455 Add test to avoid unintentional reordering of items in HbaseObjectWritable (Michael Drzal)
    
    git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1293455 13f79535-47bb-0310-9956-ffa450edef68
{code}
                
> interop issue: RowMutations should be added at the end in HbaseObjectWriteable class
> ------------------------------------------------------------------------------------
>
>                 Key: HBASE-5962
>                 URL: https://issues.apache.org/jira/browse/HBASE-5962
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Kannan Muthukkaruppan
>
> In HbaseObjectWriteable.java new classes should be added to the end; else, old clients will not be able to talk to new HBase servers. This is causing issues in test cluster with the following stack trace:
> 2012-05-08 11:24:32,416 ERROR org.apache.hadoop.hbase.io.HbaseObjectWritable: Can't find class
> java.lang.ClassNotFoundException: 
> at java.lang.Class.forName0(Native Method)
> at java.lang.Class.forName(Class.java:247)
> at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:792)
> at org.apache.hadoop.hbase.io.HbaseObjectWritable.getClassByName(HbaseObjectWritable.java:552)
> at org.apache.hadoop.hbase.io.HbaseObjectWritable.readObject(HbaseObjectWritable.java:520)
> at org.apache.hadoop.hbase.ipc.HBaseRPC$Invocation.readFields(HBaseRPC.java:136)
> at org.apache.hadoop.hbase.ipc.HBaseServer$Connection.processData(HBaseServer.java:953)
> at org.apache.hadoop.hbase.ipc.HBaseServer$Connection.readAndProcess(HBaseServer.java:895)
> at org.apache.hadoop.hbase.ipc.HBaseServer$Listener.doRead(HBaseServer.java:471)
> at org.apache.hadoop.hbase.ipc.HBaseServer$Listener.run(HBaseServer.java:371)
> 2012-05-08 11:24:33,766 ERROR org.apache.hadoop.hbase.io.HbaseObjectWritable: Can't find class

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