[GitHub] [spark] sarveshdave1 opened a new pull request #30252: [MINOR][SS][DOCS] Update join type in stream static joins code examples

[GitBox]

sarveshdave1 opened a new pull request #30252:
URL: https://github.com/apache/spark/pull/30252


   ### What changes were proposed in this pull request?
   Update join type in stream static joins code examples in structured 
streaming programming guide.
   1) Scala, Java and Python examples have a common issue.
   The example is of stream and static df left outer join but the join keyword 
is "right_join".
       a) This is an example of left outer join.
       b) The keyword "right_join/left_join" is unsupported and it should be 
"right_outer/left_outer"
   So, all this code snippets have been updated to "left_outer".
   
   2) R exmaple is correct, but the example is of "right_outer". 
   It is changed to "left_outer" to make it consistent with other three 
examples of scala, java and python.
   
   
   ### Why are the changes needed?
   The changes are needed to fix the mistake in example code of documentation.
   
   
   ### Does this PR introduce _any_ user-facing change?
   Yes,user-facing change (documentation update only).
   
   **Screenshots 1: Scala/Java/python example (similar issue)**
   _Before:_
   <img width="941" alt="Screenshot 2020-11-05 at 12 16 09 AM" 
src="https://user-images.githubusercontent.com/62717942/98155351-19e59400-1efc-11eb-8142-e6a25a5e6497.png";>
   
   _After:_
   <img width="922" alt="Screenshot 2020-11-05 at 12 17 12 AM" 
src="https://user-images.githubusercontent.com/62717942/98155503-5d400280-1efc-11eb-96e1-5ba0f3c35c82.png";>
   
   **Screenshots 2: R example (Make it consistent with above change)**
   _Before:_
   <img width="896" alt="Screenshot 2020-11-05 at 12 19 57 AM" 
src="https://user-images.githubusercontent.com/62717942/98155685-ac863300-1efc-11eb-93bc-b7ca4dd34634.png";>
   
   _After:_
   <img width="919" alt="Screenshot 2020-11-05 at 12 20 51 AM" 
src="https://user-images.githubusercontent.com/62717942/98155739-c0ca3000-1efc-11eb-8f95-a7538fa784b7.png";>
   
   ### How was this patch tested?
   The change was tested locally.
   1) cd docs/
       SKIP_API=1 jekyll build
   2) Verify docs/_site/structured-streaming-programming-guide.html file in 
browser.
   


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