Rohini Palaniswamy created PIG-4773:
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Summary: [Pig on Tez] Secondary key descending sort in nested
foreach after union does ascending instead
Key: PIG-4773
URL: https://issues.apache.org/jira/browse/PIG-4773
Project: Pig
Issue Type: Bug
Reporter: Rohini Palaniswamy
Assignee: Rohini Palaniswamy
Fix For: 0.16.0
PigSecondaryKeyComparator does not implement a compare(WritableComparable a,
WritableComparable b) method. In case of OrderedGroupedMergedKVInput with
vertex groups, object comparison instead of byte comparison is done when
merging the multiple inputs into one. Since the compare API is not overridden,
WritableComparator compare API is called and the value types are directly
compared which means it is always ascending.
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