Pradeep Kamath updated PIG-649:

    Status: Patch Available  (was: Open)

The attached patch fixes the issue by keep track of the return value of the 
underlying input stream's skip(). If enough bytes are not skipped on the 
initial call, multiple calls are made till enough bytes are skipped

> RandomSampleLoader does not handle skipping correctly in getNext()
> ------------------------------------------------------------------
>                 Key: PIG-649
>                 URL: https://issues.apache.org/jira/browse/PIG-649
>             Project: Pig
>          Issue Type: Bug
>    Affects Versions: types_branch
>            Reporter: Pradeep Kamath
>            Assignee: Pradeep Kamath
>             Fix For: types_branch
>         Attachments: PIG-649.patch
> Currently RandomSampleLoader calls skip() on the underlying input stream 
> (BufferedPositionedInputStream) in its getNext(). The input stream may not 
> actually skip over the amount the RandomSampleLoader needs in one call. 
> RandomSampleLoader should check the return value from the skip() call and 
> ensure that skip() is called repeatedly (if necessary) till the needed number 
> of bytes are skipped.

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