Sebastien Rainville created SPARK-2204:
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Summary: Scheduler for Mesos in fine-grained mode launches tasks
on random executors
Key: SPARK-2204
URL: https://issues.apache.org/jira/browse/SPARK-2204
Project: Spark
Issue Type: Bug
Components: Mesos
Affects Versions: 1.0.0
Reporter: Sebastien Rainville
Priority: Blocker
Fix For: 1.0.1
MesosSchedulerBackend.resourceOffers(SchedulerDriver, List[Offer]) is assuming
that TaskSchedulerImpl.resourceOffers(Seq[WorkerOffer]) is returning task lists
in the same order as the offers it was passed, but in the current
implementation TaskSchedulerImpl.resourceOffers shuffles the offers to avoid
assigning the tasks always to the same executors. The result is that the tasks
are launched on random executors.6
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