[GitHub] spark pull request: [SPARK-6214][CORE] - A simple expression langu...

[srowen <gi...@git.apache.org>]

Github user srowen commented on the pull request:

    https://github.com/apache/spark/pull/4937#issuecomment-96081013
  
    This is a cool feature, but I'm not sure Spark needs its own in-house expression language. It seems like it belongs in, for example, the Typesafe Config project that Spark uses, or an adjunct to that project. This does introduce some tricky cases: when can what types of props expect to reference values from which sources? already a dark and tricky corner of the project. I feel like this may not add enough value to justify the overhead, which is not any comment on the quality of the idea, language or execution.


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