Github user kayousterhout commented on the pull request:
https://github.com/apache/spark/pull/3009#issuecomment-62603471
@shivaram and I played around with this a bit and, after looking at it,
having the total number of tasks as the only progress bar is somewhat
unintuitive. I'd propose two changes: (1) add a second progress bar, that
shows up to the left of the total tasks bar, that shows "Stages: Succeeded /
Total". (2) For the tasks progress bar, change the title to say "Tasks (for all
stages): Succeeded / Total". It will likely spill to two lines then, but that
seems worthwhile to make this a little more clear.
One other suggestion: I wonder if it would be worthwhile to add a very
short description at the top of the main jobs page that says something like 'A
job is triggered by a action, like "count()" or "saveAsTextFile()". Click on a
job's title to see information about the stages of tasks associated with the
job.' Maybe this is too much clutter -- but I think it might be nice to clue
people in to what they're looking at (even the wise @shivaram pointed out that
he wasn't quite sure what a job was when we were looking at this).
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