Hi @asish ,   I have uploaded the Nifi flow definition, so you can reproduce my issue.(In txt file because I can't upload json extension, just change the extension)   It generates a csv:   ``` allstring,mixedtype "foo","bar" "foo2",2 "foo3","bar2" ```   Then convert it to Parquet (V1). The issue comes from UpdateHive processor : Error while compiling statement: FAILED: Execution Error, return code 40000 from org.apache.hadoop.hive.ql.ddl.DDLTask. java.lang.UnsupportedOperationException: Unknown field type: uniontype<int,string>   The issue is not present in Nifi when I convert to another format (Avro for example). But is present when I tried to read back the data from the table (from Hue): AnalysisException: Could not load table open_data.test from catalog CAUSED BY: TableLoadingException: Could not load table open_data.test from catalog CAUSED BY: TException: TGetPartialCatalogObjectResponse(status:TStatus(status_code:GENERAL, error_msgs:[TableLoadingException: Unsupported type 'uniontype' in column 'mixedtype' of table 'test']), lookup_status:OK)     Currently, I am on the last version of Nifi CFM in CDP: 7.2.11 - Flow Management Light Duty with Apache NiFi, Apache NiFi Registry   Thank you for your help,   Best regards, ... View more