[HIVE-9767] Fixes in Hive UDF to be usable in Pig

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.2.0
• Component/s: UDF
• Hadoop Flags: Reviewed
• Assignee: Daniel Dai
• Reporter: Daniel Dai
• Created: 24/Feb/15 08:03
• Updated: 18/May/15 19:55
• Resolved: 26/Mar/15 17:13

Description

There are issues in UDF never get exposed because the execution path is never tested:

1. Assume the ObjectInspector to be WritableObjectInspector not the ObjectInspector pass to UDF
2. Assume the input parameter to be Writable not respecting the ObjectInspector pass to UDF
3. Assume ConstantObjectInspector to be WritableConstantXXXObjectInspector
4. The InputObjectInspector does not match OutputObjectInspector of previous stage in UDAF
5. The execution path involving convertIfNecessary is never been tested

Attach a patch to fix those.

Issue Links

• is related to: PIG-3294 Allow Pig use Hive UDFs
• links to: https://reviews.apache.org/r/32286/