ihuzenko commented on a change in pull request #2048: DRILL-7429: Wrong column
order when selecting complex data using Hive storage plugin
URL: https://github.com/apache/drill/pull/2048#discussion_r406054349
##########
File path:
exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/project/ProjectRecordBatch.java
##########
@@ -120,17 +119,7 @@ protected IterOutcome doWork() {
// since this is first batch and we already got a NONE, need to
set up the schema
doAlloc(0);
setValueCount(0);
-
- // Only need to add the schema for the complex exprs because
others should already have
- // been setup during setupNewSchema
- for (FieldReference fieldReference : complexFieldReferencesList) {
- MaterializedField field =
MaterializedField.create(fieldReference.getAsNamePart().getName(),
- UntypedNullHolder.TYPE);
- container.add(new UntypedNullVector(field,
container.getAllocator()));
- }
- container.buildSchema(SelectionVectorMode.NONE);
- wasNone = true;
- return IterOutcome.OK_NEW_SCHEMA;
+ return IterOutcome.NONE;
Review comment:
AFAIK there is ```handleNullInput()``` which should be called for this
purpose. Here was workaround for adding late complex types to container and
rebuilding schema was necessary. One thing I may be missing here is setting
```wasNone = true;```, so I'll add it.
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