amansinha100 commented on a change in pull request #1620: DRILL-6997: Semijoin
is changing the join ordering for some tpcds que…
URL: https://github.com/apache/drill/pull/1620#discussion_r250847043
##########
File path:
exec/java-exec/src/main/java/org/apache/drill/exec/planner/sql/handlers/DefaultSqlHandler.java
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@@ -277,6 +277,10 @@ protected DrillRel convertToRawDrel(final RelNode
relNode) throws SqlUnsupported
}
}
+ if (context.getPlannerSettings().isSemiJoinEnabled() &&
Review comment:
Pls add a brief explanation as comments for why the semi join conversion is
done at this stage of the planning process after the normal join ordering is
done.
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