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From matd <>
Subject what is metadata in StructField ?
Date Wed, 15 Jul 2015 09:48:23 GMT
I see in StructField that we can provide metadata.

What is it meant for ?  How is it used by Spark later on ?
Are there any rules on what we can/cannot do with it ?

I'm building some DataFrame processing, and I need to maintain a set of
(meta)data along with the DF. I was wondering if I can use
StructField.metadata for this use, or if I should build my own structure.


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