Gustavo de Morais created FLINK-38554:
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Summary: Adjust FlinkMultiJoin self cost to be more accurate
Key: FLINK-38554
URL: https://issues.apache.org/jira/browse/FLINK-38554
Project: Flink
Issue Type: Sub-task
Components: Table SQL / Planner
Affects Versions: 2.1.0
Reporter: Gustavo de Morais
Assignee: Gustavo de Morais
Fix For: 2.2.0
We've observed some situations where the volcano planner is picking a less
efficient plan out of LOGICAL_OPT_RULES.
This seems to be mapped down to us hitting the
DOUBLE max value for some of metrics. The consequence is that the cost of the
nodes past the MultiJoin does not add up to the cumulative cost which leads to
the issue above.
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