Github user kayousterhout commented on the pull request:
https://github.com/apache/spark/pull/2342#issuecomment-55178122
Echoing what @vanzin said, this looks great and I have found a very similar
tool to be useful in the past. One feature suggestion: rather than showing a
single brown bar for each task, can you show the time breakdown? In an
existing (but much more crude!) tool some folks in the AMPLab use, we've found
this to a very helpful way of visually diagnosing bottlenecks:
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