Github user jongyoul commented on the pull request:
https://github.com/apache/spark/pull/3994#issuecomment-70352687
@mateiz especially, I've found that mesos launcher copy spark file from
hers and extract that file mesos working directory. When tasks are launched at
the same time, one task are trying to launch it while another task are
extracting the file. At this case, former task sometimes aren't launched so
launcher returns `TASK_LOST` without any logs in my test. I think this is not a
intended situation.
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