Github user amansinha100 commented on the issue:
https://github.com/apache/drill/pull/794
A general comment about filter evaluation: In HashJoin and MergeJoin we do
implicit casting of one of the join columns to process the join condition (see
invocations of JoinUtils.addLeastRestrictiveCasts()). Since you are adding
filter evaluation to NestedLoopJoin, I would think we need this there as well.
However, I am ok if you want to create a separate JIRA for doing that.
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