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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HBASE-1871) Wrong type used in TableMapReduceUtil.initTableReduceJob()
Date Sat, 26 Sep 2009 21:24:16 GMT

     [ https://issues.apache.org/jira/browse/HBASE-1871?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack resolved HBASE-1871.
--------------------------

       Resolution: Fixed
    Fix Version/s: 0.21.0
     Hadoop Flags: [Reviewed]

Applied trunk and branch.  Thanks for the patch Lars.

> Wrong type used in TableMapReduceUtil.initTableReduceJob()
> ----------------------------------------------------------
>
>                 Key: HBASE-1871
>                 URL: https://issues.apache.org/jira/browse/HBASE-1871
>             Project: Hadoop HBase
>          Issue Type: Bug
>    Affects Versions: 0.20.0
>            Reporter: Lars George
>            Assignee: Lars George
>             Fix For: 0.20.1, 0.21.0
>
>         Attachments: HBASE-1871.patch
>
>
> Since we changed it so that TableOutputFormat can handle Put and Delete it is necessary
to set the output value class to Writable.
> {code}
>   public static void initTableReducerJob(String table,
>     Class<? extends TableReducer> reducer, Job job, Class partitioner)
>   throws IOException {
>     job.setOutputFormatClass(TableOutputFormat.class);
>     if (reducer != null) job.setReducerClass(reducer);
>     job.getConfiguration().set(TableOutputFormat.OUTPUT_TABLE, table);
>     job.setOutputKeyClass(ImmutableBytesWritable.class);
>     job.setOutputValueClass(Put.class);
>    ....
> {code} 
> The last line should be 
> {code}
>     job.setOutputValueClass(Writable.class);
> {code}

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