Github user sryza commented on a diff in the pull request: https://github.com/apache/spark/pull/5063#discussion_r27149333 --- Diff: docs/running-on-mesos.md --- @@ -211,6 +211,14 @@ See the [configuration page](configuration.html) for information on Spark config </td> </tr> <tr> + <td><code>spark.mesos.executor.cores</code></td> + <td>1.0</td> + <td> + Set the amount of cores to request for running a mesos executor. This setting is only used for Mesos fine-grained mode. + By default, executor will use the amount of cores even though no task is running on an executor. --- End diff -- I would change this to "The setting, which can be a floating point number, controls the number of cores allocated to the executor not for use by tasks."
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