Github user srowen commented on a diff in the pull request:

    https://github.com/apache/spark/pull/2765#discussion_r25065970
  
    --- Diff: docs/streaming-programming-guide.md ---
    @@ -641,17 +641,17 @@ methods for creating DStreams from files and Akka 
actors as input sources.
     
         <div class="codetabs">
         <div data-lang="scala" markdown="1">
    -        streamingContext.fileStream[KeyClass, ValueClass, 
InputFormatClass](dataDirectory)
    +        streamingContext.fileStream[KeyClass, ValueClass, 
InputFormatClass](dataDirectory, depth)
    --- End diff --
    
    I think all of the examples should continue to show this without the 
`depth` parameter, since it's optional and for particular use cases.


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