Quanlong Huang created IMPALA-15059:
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Summary: Use HBO stats in calcite planner
Key: IMPALA-15059
URL: https://issues.apache.org/jira/browse/IMPALA-15059
Project: IMPALA
Issue Type: Improvement
Components: Frontend
Reporter: Quanlong Huang
Assignee: Quanlong Huang
HBO stats are fetched in Impala PlanNodes, e.g. in HdfsScanNode.init() ->
computeStats() -> computeCardinalities(), which is too late for calcite
optimizations to leverage them.
We need to integrate HBO with calcite planner by fetching HBO stats in places
like
ImpalaRelMdRowCount.
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