Github user weijietong commented on a diff in the pull request: https://github.com/apache/drill/pull/889#discussion_r135254275 --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/join/JoinUtils.java --- @@ -231,6 +236,12 @@ public static boolean isScalarSubquery(RelNode root) { return true; } } + if (!hasMoreInputs && currentRel != null) { + Double rowSize = RelMetadataQuery.instance().getMaxRowCount(currentRel); --- End diff -- I agree that we should rewrite the method by call RelMetadataQuery.getMaxRowCount(). btw, could you give a guide how calcite do that ?
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