Github user philipphoffmann commented on a diff in the pull request:
https://github.com/apache/spark/pull/13051#discussion_r63086006
--- Diff: docs/running-on-mesos.md ---
@@ -228,7 +228,11 @@ in your
[SparkConf](configuration.html#spark-properties).
The Docker image used must have an appropriate version of Spark already
part of the image, or you can
have Mesos download Spark via the usual methods.
-Requires Mesos version 0.20.1 or later.
+Note that by default Mesos agents will not pull the image if it already
exists on the agent. If you use mutable image
+tags you can set `spark.mesos.executor.docker.forcePullImage` to `true` in
order to force the agent to always pull the
+image before running the executor.
+
+Requires Mesos version 0.22.2 or later.
--- End diff --
True, rewrote that part.
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