Github user jinfengni commented on a diff in the pull request:
https://github.com/apache/drill/pull/546#discussion_r71760001
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/flatten/FlattenRecordBatch.java
---
@@ -267,10 +276,21 @@ private TransferPair
getFlattenFieldTransferPair(FieldReference reference) {
if (flattenField instanceof RepeatedMapVector) {
tp =
((RepeatedMapVector)flattenField).getTransferPairToSingleMap(reference.getAsNamePart().getName(),
oContext.getAllocator());
} else {
- final ValueVector vvIn =
RepeatedValueVector.class.cast(flattenField).getDataVector();
- // vvIn may be null because of fast schema return for repeated list
vectors
- if (vvIn != null) {
- tp = vvIn.getTransferPair(reference.getAsNamePart().getName(),
oContext.getAllocator());
+ try {
+ final ValueVector vvIn =
RepeatedValueVector.class.cast(flattenField).getDataVector();
+ // vvIn may be null because of fast schema return for repeated
list vectors
+ if (vvIn != null) {
+ tp = vvIn.getTransferPair(reference.getAsNamePart().getName(),
oContext.getAllocator());
+ }
+ } catch(ClassCastException ex) {
--- End diff --
We can apply similar changes above here ( catch ClassCastException ->
instancOf check), also, logger same message.
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