Andy Schlaikjer created PIG-2915: ------------------------------------ Summary: Builtin TOP udf is sensitive to null input bags Key: PIG-2915 URL: https://issues.apache.org/jira/browse/PIG-2915 Project: Pig Issue Type: Improvement Components: internal-udfs Affects Versions: 0.11 Reporter: Andy Schlaikjer
TOP(max, sortField, inputBag) is sensitive to null inputBag arguments. In some cases it is preferable for a UDF to simply return null for null inputs e.g. to avoid conditional logic in a script. Most of the UDFs I write act this way, but TOP does not. This patch updates TOP to return null in the case where all input bags are null. Unit tests are included to confirm expected behavior. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira