Vladimir Sitnikov created CALCITE-2817:
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Summary: Make CannotPlanException great
Key: CALCITE-2817
URL: https://issues.apache.org/jira/browse/CALCITE-2817
Project: Calcite
Issue Type: Bug
Components: core
Affects Versions: 1.18.0
Reporter: Vladimir Sitnikov
Assignee: Julian Hyde
1) Empty subsets are the typical offenders for CannotPlan, so identify them and
print before printing the planner dump
2) Print Graphviz-compatible output as well so the output is easier to
understand
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