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

    https://github.com/apache/spark/pull/12469#discussion_r60095404
  
    --- Diff: sql/core/src/main/scala/org/apache/spark/sql/Dataset.scala ---
    @@ -453,8 +453,8 @@ class Dataset[T] private[sql](
        * Returns true if this [[Dataset]] contains one or more sources that 
continuously
        * return data as it arrives. A [[Dataset]] that reads data from a 
streaming source
        * must be executed as a [[ContinuousQuery]] using the `startStream()` 
method in
    -   * [[DataFrameWriter]].  Methods that return a single answer, (e.g., 
`count()` or
    -   * `collect()`) will throw an [[AnalysisException]] when there is a 
streaming
    +   * [[DataFrameWriter]]. Methods that return a single answer, e.g. 
`count()` or
    --- End diff --
    
    I don't think e.g. is ever written outside a parenthetical (it looks wrong 
to me that way) and a parenthetical isn't preceded by a comma. I can't find any 
clear reference for that in 60 seconds though. Your change looks at least 
right-er than before, even if this is super pedantic. Pedantic is good.


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