Github user bbende commented on the issue:
https://github.com/apache/nifi/pull/3057
@VikingK in your schema it has OItems defined as an array, but then in the
JSON OItems is not an array, its an object with a field called array. So
running with that schema and example JSON I get:
```
Caused by: java.lang.ClassCastException:
org.codehaus.jackson.node.ObjectNode cannot be cast to
org.codehaus.jackson.node.ArrayNode
at
org.apache.nifi.json.JsonTreeRowRecordReader.convertField(JsonTreeRowRecordReader.java:188)
at
org.apache.nifi.json.JsonTreeRowRecordReader.convertJsonNodeToRecord(JsonTreeRowRecordReader.java:118)
at
org.apache.nifi.json.JsonTreeRowRecordReader.convertJsonNodeToRecord(JsonTreeRowRecordReader.java:83)
at
org.apache.nifi.json.JsonTreeRowRecordReader.convertJsonNodeToRecord(JsonTreeRowRecordReader.java:74)
at
org.apache.nifi.json.AbstractJsonRowRecordReader.nextRecord(AbstractJsonRowRecordReader.java:92)
```
Which makes sense because the OItems field is not an array, but the schema
says it is.
I'm trying to figure out how to reproduce the other error you showed.
---
