[jira] [Created] (SPARK-22567) spark.mesos.executor.memoryOverhead equivalent for the Driver when running on Mesos

["Michael Moss (JIRA)" <ji...@apache.org>]

Michael Moss created SPARK-22567:
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             Summary: spark.mesos.executor.memoryOverhead equivalent for the Driver when running on Mesos
                 Key: SPARK-22567
                 URL: https://issues.apache.org/jira/browse/SPARK-22567
             Project: Spark
          Issue Type: Improvement
          Components: Mesos
    Affects Versions: 2.2.0
            Reporter: Michael Moss
            Priority: Minor


spark.mesos.executor.memoryOverhead is:
"The amount of additional memory, specified in MB, to be allocated per executor. By default, the overhead will be larger of either 384 or 10% of spark.executor.memory"

It is important for every JVM process to have memory available to it, beyond its heap (Xmx) for native allocations.

When using the MesosClusterDispatcher and running the Driver on Mesos (https://spark.apache.org/docs/latest/running-on-mesos.html#cluster-mode), it appears that the Driver's mesos sandbox is allocated with the same amount of memory (configured with spark.driver.memory) as the heap (Xmx) itself. This increases the prevalence of OOM exceptions.



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