[jira] Commented: (PIG-1513) Skewed join doesn't handle empty input directory

["Olga Natkovich (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PIG-1513?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12891281#action_12891281 ] 

Olga Natkovich commented on PIG-1513:
-------------------------------------

Are we sure that the problem only occurs with skewed join? I would like to make this JIRA more generic and to make sure that pig returns empty results given empty input and short circuits the processing as early as possible

> Skewed join doesn't handle empty input directory
> ------------------------------------------------
>
>                 Key: PIG-1513
>                 URL: https://issues.apache.org/jira/browse/PIG-1513
>             Project: Pig
>          Issue Type: Bug
>            Reporter: Richard Ding
>            Assignee: Richard Ding
>             Fix For: 0.8.0
>
>
> The following script
> {code}
> A = load 'input';
> B = load 'emptydir';
> C = join B by $0, A by $0 using 'skewed';
> dump C
> {code}
> fails with "ERROR: java.lang.RuntimeException: Empty samples file';
> In this case, the sample job has 0 maps.  Pig doesn't expect this and fails . 

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