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Posted to mapreduce-issues@hadoop.apache.org by "Jason Lowe (JIRA)" <ji...@apache.org> on 2013/01/14 23:44:13 UTC
[jira] [Updated] (MAPREDUCE-4941) Use of
org.apache.hadoop.mapred.lib.CombineFileRecordReader requires casting
[ https://issues.apache.org/jira/browse/MAPREDUCE-4941?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jason Lowe updated MAPREDUCE-4941:
----------------------------------
Attachment: MAPREDUCE-4941.patch
> Use of org.apache.hadoop.mapred.lib.CombineFileRecordReader requires casting
> ----------------------------------------------------------------------------
>
> Key: MAPREDUCE-4941
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4941
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 2.0.2-alpha, 0.23.5
> Reporter: Jason Lowe
> Priority: Minor
> Attachments: MAPREDUCE-4941.patch
>
>
> Unlike its counterpart in org.apache.hadoop.mapreduce.lib.input, the CombineFileRecordReader in mapred requires a user to cast to a RecordReader since the constructor specification says it must have the RecordReader<K,V> class as a parameter. It should use {{Class<? extends RecordReader<K,V>>}} like its mapreduce counterpart to make it easier to use.
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