[GitHub] [incubator-druid] kamaci commented on issue #7027: Auto Detection of Field Types

[GitBox <gi...@apache.org>]

kamaci commented on issue #7027: Auto Detection of Field Types
URL: https://github.com/apache/incubator-druid/issues/7027#issuecomment-471526501
 
 
   I've started to work on this issue. I have 3 possible solutions on undefined schema fields:
   
   1) If value can be convertible to `Float` than convert to `Float`, otherwise try with `Long`, otherwise go with `String`.
   
   2) If field name ends with `_l,` and is not defined at scheme, and a config value of `schemeless mode` is enabled then convert to `Long`, so on so forth.
   
   3) Create a regex defined field. Accept a regex value and make transformation on it which is a generic solution of 2. i.e.:
   
   ```
   { "pattern": "*_l", "type": "long" },
   { "pattern": "*_f", "type": "float" }
   ```
   
   @gianm what do you think?

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