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From "Krishna Ramachandran (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-1496) org.apache.hadoop.mapred.lib.FieldSelectionMapReduce removes empty fields from key/value end
Date Wed, 11 Aug 2010 23:59:16 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1496?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12897515#action_12897515
] 

Krishna Ramachandran commented on MAPREDUCE-1496:
-------------------------------------------------

can you provide more details?
say for example 
your key fields have a " " at the end?

like

"map.output.key.value.fields.spec", "6     ,5,1-3:0-"
instead of 
"map.output.key.value.fields.spec", "6,5,1-3:0-"


> org.apache.hadoop.mapred.lib.FieldSelectionMapReduce removes empty fields from key/value
end
> --------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-1496
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1496
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 0.20.1
>            Reporter: Maxim Zizin
>            Priority: Critical
>
> If input record's key and/or value has empty fields in the end then these fields will
be cut off by org.apache.hadoop.mapred.lib.FieldSelectionMapReduce

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