Hyunsik Choi created TAJO-609:
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Summary: PlannerUtil::getRelationLineage ignores
PartitionedTableScanNode
Key: TAJO-609
URL: https://issues.apache.org/jira/browse/TAJO-609
Project: Tajo
Issue Type: Bug
Components: planner/optimizer
Reporter: Hyunsik Choi
Assignee: Hyunsik Choi
Fix For: 0.8-incubating
Currently, PlannerUtil::getRelationLineage ignores PartitionedTableScanNode. As
a result, PlannerUtil::getRelationLineage can return empty relations. It
results in wrong estimation of relation size. Finally, in the case where a
broadcast join between a partitioned table and a small table, this problem
causes the bug to choose the larger table instead of smaller one to be loaded
on hash table.
This patch fixes this bug, refactors inner-join related methods, and added more
comments on them.
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