[GitHub] rxin opened a new pull request #23317: [SPARK-26368][SQL] Make it clear that getOrInferFileFormatSchema doesn't create InMemoryFileIndex

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

rxin opened a new pull request #23317: [SPARK-26368][SQL] Make it clear that getOrInferFileFormatSchema doesn't create InMemoryFileIndex
URL: https://github.com/apache/spark/pull/23317
 
 
   ## What changes were proposed in this pull request?
   I was looking at the code and it was a bit difficult to see the life cycle of InMemoryFileIndex passed into getOrInferFileFormatSchema, because once it is passed in, and another time it was created in getOrInferFileFormatSchema. It'd be easier to understand the life cycle if we move the creation of it out.
   
   ## How was this patch tested?
   This is a simple code move and should be covered by existing tests.
   

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