The real exception was swallowed by another exception in CompositeJdbcConsumer::consume #734
Description
Describe the bug, including details regarding any error messages, version, and platform.
In function CompositeJdbcConsumer::consume, consumer.vector.getMinorType().getType() may throw an exception if getType return null. For example, vector.getMinorType return DECIMAL type but DECIMAL doesn't have get type: DECIMAL((ArrowType)null) (in Types.java).