[SPARK-18357] Fix yarn files/archive broken issue andd unit tests #15810
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
What changes were proposed in this pull request?
The #15627 broke functionality with yarn --files --archives does not accept any files.
This patch ensures that --files and --archives accept unique files.
How was this patch tested?
A. I added unit tests.
B. Also, manually tested --files with --archives to throw exception if duplicate files are specified and continue if unique files are specified.