MrMoronIV opened a new issue #8790: Parse/ Flatten Json Field inside TSV source 
event?
URL: https://github.com/apache/incubator-druid/issues/8790
 
 
   I have a Kafka Event in TSV which has a field that contains JSON. it 
possible to flatten this json field for ingestion, and so, how?
   
   I now have something like this for the parser, which works great:
   ```
       "parser": {
         "type": "string",
         "parseSpec": {
           "format": "tsv",
           "timestampSpec": {
             "column": "derived_tstamp",
             "format": "auto"
           },
           "hasHeaderRow": false,
           "columns": [
             "column1",
             "column2",
             "jsonColumn"
          ]
   ```
   
   How would I flatten `jsonColumn`? Do I need to include multiple parseSpecs, 
is that even possible? Or can the column have a specific `flattenSpec` defined 
in the columns array?

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