[SPARK-6650] [core] Stop ExecutorAllocationManager when context stops.#5311

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vanzin wants to merge 4 commits intoapache:masterfrom vanzin:SPARK-6650

+49-36

Commits on Apr 1, 2015

[SPARK-6650] [core] Stop ExecutorAllocationManager when context stops.
Marcelo Vanzin
committed
Stop alloc manager before scheduler.
Marcelo Vanzin
committed
More exception safety.
Marcelo Vanzin
committed
Nits.
Marcelo Vanzin
committed