Provide a way by which ObjectInspectorUtils.compare can be extended by the
caller for comparing maps which are part of the object
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Key: HIVE-2209
URL: https://issues.apache.org/jira/browse/HIVE-2209
Project: Hive
Issue Type: Sub-task
Reporter: Krishna Kumar
Assignee: Krishna Kumar
Priority: Minor
Now ObjectInspectorUtils.compare throws an exception if a map is contained
(recursively) within the objects being compared. Two obvious implementations are
- a simple map comparer which assumes keys of the first map can be used to
fetch values from the second
- a 'cross-product' comparer which compares every pair of key-value pairs in
the two maps, and calls a match if and only if all pairs are matched
Note that it would be difficult to provide a transitive greater-than/less-than
indication with maps so that is not in scope.
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