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Posted to common-dev@hadoop.apache.org by "Amareshwari Sriramadasu (JIRA)" <ji...@apache.org> on 2008/03/19 11:54:24 UTC

[jira] Commented: (HADOOP-3040) Streaming should assume an empty key if the first character on a line is the seperator (stream.map.output.field.separator, by default, tab)

    [ https://issues.apache.org/jira/browse/HADOOP-3040?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12580316#action_12580316 ] 

Amareshwari Sriramadasu commented on HADOOP-3040:
-------------------------------------------------

Just for information,  InputFormat handling of keys and values is fine, problem was in MROutputThread of PipeMapred i.e at the collect in PipeMapred

> Streaming should assume an empty key if the first character on a line is the seperator (stream.map.output.field.separator, by default, tab)
> -------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-3040
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3040
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: contrib/streaming
>            Reporter: Amareshwari Sriramadasu
>            Assignee: Amareshwari Sriramadasu
>             Fix For: 0.17.0
>
>         Attachments: patch-3040.txt
>
>
> Streaming should assume an empty key if the first character on a line is the seperator (stream.map.output.field.separator, by default, tab). And the value as the whole line excluding the seperator.

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