[jira] [Created] (SPARK-32661) Spark executors on K8S do not request extra memory for off-heap allocations

["Luca Canali (Jira)" <ji...@apache.org>]

Luca Canali created SPARK-32661:
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             Summary: Spark executors on K8S do not request extra memory for off-heap allocations
                 Key: SPARK-32661
                 URL: https://issues.apache.org/jira/browse/SPARK-32661
             Project: Spark
          Issue Type: Bug
          Components: Kubernetes
    Affects Versions: 3.0.0
            Reporter: Luca Canali


Off-heap memory allocations are configured using `spark.memory.offHeap.enabled=true` and `conf spark.memory.offHeap.size=<size>`. Spark on YARN adds the off-heap memory size to the executor container resources. Spark on Kubernetes does not request the allocation of the off-heap memory. Currently, this can be worked around by using spark.executor.memoryOverhead to reserve memory for off-heap allocations. This proposes make Spark on Kubernetes behave as in the case of YARN, that is adding spark.memory.offHeap.size to the memory request for executor containers.



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