[jira] [Created] (SPARK-15994) Allow enabling Mesos fetch cache in coarse executor backend

["Charles Allen (JIRA)" <ji...@apache.org>]

Charles Allen created SPARK-15994:
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             Summary: Allow enabling Mesos fetch cache in coarse executor backend 
                 Key: SPARK-15994
                 URL: https://issues.apache.org/jira/browse/SPARK-15994
             Project: Spark
          Issue Type: Improvement
          Components: Mesos
    Affects Versions: 2.0.0
            Reporter: Charles Allen


Mesos 0.23.0 introduces a Fetch Cache feature http://mesos.apache.org/documentation/latest/fetcher/ which allows caching of resources specified in command URIs.

This patch:

* Updates the Mesos shaded protobuf dependency to 0.23.0
* Allows setting `spark.mesos.fetchCache.enable` to enable the fetch cache for all specified URIs. (URIs must be specified for the setting to have any affect)
* Updates documentation for Mesos configuration with the new setting.

This patch does NOT:

* Allow for per-URI caching configuration. The cache setting is global to ALL URIs for the command.



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