Github user vvysotskyi commented on a diff in the pull request: https://github.com/apache/drill/pull/1232#discussion_r184004929 --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/ScanBatch.java --- @@ -409,7 +409,7 @@ public void clear() { // Check if the field exists. ValueVector v = fieldVectorMap.get(field.getName()); - if (v == null || v.getClass() != clazz) { + if (v == null || !v.getField().getType().equals(field.getType())) { --- End diff -- Thanks, added a comment with the explanation.
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