@Override
    public String toString() {
      return "Avro could not validate record against schema (record = " + record
          + ") (schema = "+schema.toString(false) + ")";
    }
Thrown when, during serialization of a Hive row to an Avro record, Avro
cannot verify the converted row to the record's schema.
serde/src/java/org/apache/hadoop/hive/serde2/avro/AvroSerializer.java