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https://reviews.apache.org/r/18305/
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Review request for Tajo.
Bugs: TAJO-614
https://issues.apache.org/jira/browse/TAJO-614
Repository: tajo
Description
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Currently, many parts use LogicalNode::toString() for explaning plans. But, we
already have ExplainLogicalPlanVisitor class to generate pretty print strings.
This patch improves logical planning related parts to use
ExplainLogicalPlanVisitor instead of toString().
For this, I added PlannerUtil::buildExplainString for generating pretty print
explain strings and simplified obsolete toString() methods of all LogicalNodes.
It much improves the readability of explain string. I expect that it would be
helpful for debugging and users' understanding of query plans.
Diffs
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Diff: https://reviews.apache.org/r/18305/diff/
Testing
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mvn clean install -Phcatalog-0.12
Thanks,
Hyunsik Choi
