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From "Markus Weimer (JIRA)" <>
Subject [jira] [Created] (REEF-1274) Add validation to YarnConfigurationConstructor
Date Wed, 23 Mar 2016 16:38:25 GMT
Markus Weimer created REEF-1274:

             Summary: Add validation to YarnConfigurationConstructor
                 Key: REEF-1274
             Project: REEF
          Issue Type: New Feature
          Components: REEF-Runtime-YARN
            Reporter: Markus Weimer

A frequent problem REEF applications encounter is a broken or unavailable YARN Configuration
of the cluster. REEF can help with the diagnose of such issues as we always load / instantiate
the YARN Configuration via {{o..r.runtime.yarn.util.YarnConfigurationConstructor}}. In that
class, we can validate the YARN configuration and report WARNINGs into the log if something
is odd. For example:

  * Is the RM IP set and reachable?
  * Is the classpath set and non-empty? If not, are the environment variables set?
  * Can a `FileSystem` instance be created using that configuration?

There are probably more tests we can perform as we hear from our users.

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