Github user aarondav commented on the pull request: https://github.com/apache/incubator-spark/pull/615#issuecomment-35433301 I'm amenable to switching to SPARK_DRIVER_MEMORY. I avoided it for two reasons: 1) Following SPARK_MEM -> SPARK_DRIVER_MEM / SPARK_EXECUTOR_MEM 2) It's shorter. However, since SPARK_MEM is supposed to never have existed, and being shorter isn't really a good argument, we can go with the version that's more consistent with the public variables.
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