Alan Gates commented on PIG-652:

As far as getting the schema in the output format, that will be the job of your 
StoreFunc to store it somewhere that your OutputFormat can retrieve it.

The path passed to the OutputFormat is the full path of the file to be written, 
not just part-001.

> Need to give user control of OutputFormat
> -----------------------------------------
>                 Key: PIG-652
>                 URL: https://issues.apache.org/jira/browse/PIG-652
>             Project: Pig
>          Issue Type: New Feature
>          Components: impl
>            Reporter: Alan Gates
>            Assignee: Alan Gates
> Pig currently allows users some control over InputFormat via the Slicer and 
> Slice interfaces.  It does not allow any control over OutputFormat and 
> RecordWriter interfaces.  It just allows the user to implement a storage 
> function that controls how the data is serialized.  For hadoop tables, we 
> will need to allow custom OutputFormats that prepare output information and 
> objects needed by a Table store function.

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