--------------------------------------------------------------------
Key: PIG-1573
URL: https://issues.apache.org/jira/browse/PIG-1573
Project: Pig
Issue Type: Bug
Affects Versions: 0.7.0
Reporter: Xuefu Zhang
Fix For: 0.9.0
Currently If in a pig script user uses a UDF with no argument, PIG backend assumes that the UDF takes all input so at run time it passes all input as a tuple to the UDF. This assumption is incorrect, causing conceptual confusions. If a UDF takes all input, it can specify a star (*) as its argument. If it specify no argument at all, then we assume that it requires no input data.
We need to differentiate no input and all input for a UDF. Thus, in case that a UDF specify no argument, backend should pass the UDF an empty tuple.
See notes in PIG-1586 for more information.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
