Zhenhua Wang created SPARK-19994:
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Summary: Wrong outputOrdering for right/full outer smj
Key: SPARK-19994
URL: https://issues.apache.org/jira/browse/SPARK-19994
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 2.2.0
Reporter: Zhenhua Wang
For right outer join, values of the left key will be filled with nulls if it
can't match the value of the right key, so `nullOrdering` of the left key can't
be guaranteed. We should output right key order.
For full outer join, neither left key nor right key guarantees `nullOrdering`.
We should not output any ordering.
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