[jira] [Created] (FLINK-19807) Add documentation for Flink's "pre-flight phase" and "cluster phase"

[Shang Yuanchun (Jira)]

Manas Kale created FLINK-19807:
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             Summary: Add documentation for Flink's "pre-flight phase" and "cluster phase"
                 Key: FLINK-19807
                 URL: https://issues.apache.org/jira/browse/FLINK-19807
             Project: Flink
          Issue Type: Improvement
          Components: Documentation
            Reporter: Manas Kale


This is a result of [this|https://lists.apache.org/thread.html/r496e1c312d4675afd32388f3c1f993e2f6d1c369c98580fd7c436457%40%3Cuser.flink.apache.org%3E] thread.
Basically, care has to be taken when dealing with static variables - the behaviour might be different when running in a minicluster in your IDE v/s running on a cluster.
As such, Flink's "pre-flight phase" and "cluster phase" should be explained on the website along with a warning about this behaviour.



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