Github user pwendell commented on the pull request:
https://github.com/apache/spark/pull/1860#issuecomment-53229289
Hey @MartinWeindel - I'm curious, which of the following cases are you in:
Case 1. You have individual executors that attempt to acquire all the
memory on the node.
Case 2. You have multiple executors per node, but their total memory adds
up the total amount of memory on the node.
I could see how this would help with Case 2 because it could prevent a
second executor from being launched in a way that acquires all of the host
memroy. But I'm still wondering wither it affects Case 1.
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