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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