Github user gatorsmile commented on the issue:
https://github.com/apache/spark/pull/22255
https://github.com/apache/parquet-format/blob/master/src/main/thrift/parquet.thrift#L902
@rdblue Can we use created_by?
```
/** String for application that wrote this file. This should be in the
format
* <Application> version <App Version> (build <App Build Hash>).
* e.g. impala version 1.0 (build
6cf94d29b2b7115df4de2c06e2ab4326d721eb55)
**/
6: optional string created_by
```
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