GitHub user dragos opened a pull request:
https://github.com/apache/spark/pull/9027
[SPARK-7874][MESOS] Donât allocate more than spark.cores.max in
fine-grained mode.
Currently only coarse-grained mode observes `spark.cores.max`. The
fine-grained mode should follow the same limit, and not go above the defined
maximum cores.
There's some duplication of logic between the coarse-grained and
fine-grained mode. I created
[SPARK-10444](https://issues.apache.org/jira/browse/SPARK-10444) to fix that.
Rework of #8671
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/dragos/spark
issue/mesos/fine-grained-maxCores-wip
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/9027.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #9027
----
commit f37d3e202df0de90ae7eed7cba2abb2dfba79f76
Author: Iulian Dragos <[email protected]>
Date: 2015-09-08T11:49:14Z
Donât allocate more than spark.cores.max in fine-grained mode.
commit 5817d68836fed014841afb20676b23e09fcd96dd
Author: Iulian Dragos <[email protected]>
Date: 2015-09-17T14:30:21Z
Updated tests and reformulated the condition to make it clearer that we
canât go negative.
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