Github user bitblender commented on a diff in the pull request:
https://github.com/apache/drill/pull/837#discussion_r122287096
--- Diff:
exec/java-exec/src/test/java/org/apache/drill/exec/record/TestVectorContainer.java
---
@@ -110,13 +110,16 @@ public void testContainerMerge() {
RowSet mergedRs = left.merge(right);
comparison.verifyAndClear(mergedRs);
- // Add a selection vector. Ensure the SV appears in the merged
- // result. Test as a row set since container's don't actually
- // carry the selection vector.
+ // Add a selection vector. Merging is forbidden.
--- End diff --
Maybe this can be changed to "//Merging data with a selection vector is
forbidden". As is the comment implies that we are adding a selection vector.
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