slim bouguerra created HIVE-19615:
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Summary: Proper handling of is null and not is null predicate when
pushed to Druid
Key: HIVE-19615
URL: https://issues.apache.org/jira/browse/HIVE-19615
Project: Hive
Issue Type: Bug
Reporter: slim bouguerra
Assignee: slim bouguerra
Fix For: 3.0.0
Recent development in Druid introduced new semantic of null handling
[here|https://github.com/b-slim/druid/commit/219e77aeac9b07dc20dd9ab2dd537f3f17498346]
Based on those changes when need to honer push down of expressions with is
null/ is not null predicates.
The prosed fix overrides the mapping of Calcite Function to Druid Expression to
much the correct semantic.
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