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