Reynold Xin created SPARK-21726:
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Summary: Check for structural integrity of the plan in QO in test
mode
Key: SPARK-21726
URL: https://issues.apache.org/jira/browse/SPARK-21726
Project: Spark
Issue Type: New Feature
Components: SQL
Affects Versions: 2.2.0
Reporter: Reynold Xin
Right now we don't have any checks in the optimizer to check for the structural
integrity of the plan (e.g. resolved). It would be great if in test mode, we
can check whether a plan is still resolved after the execution of each rule, so
we can catch rules that return invalid plans.
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