[jira] [Created] (FLINK-3892) ConnectionUtils may die with NullPointerException

[Shang Yuanchun (Jira)]

Maximilian Michels created FLINK-3892:
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             Summary: ConnectionUtils may die with NullPointerException
                 Key: FLINK-3892
                 URL: https://issues.apache.org/jira/browse/FLINK-3892
             Project: Flink
          Issue Type: Bug
          Components: YARN Client
    Affects Versions: 1.1.0, 1.0.3
            Reporter: Maximilian Michels
            Assignee: Maximilian Michels
            Priority: Minor
             Fix For: 1.1.0


If an invalid hostname is specificed or the hostname can't be resolved from the current interface, {{ConnectionUtils.findAddressUsingStrategy}} may throw a {{NullPointerException}}. When trying to access the {{InetAddress}} of an {{InetSocketAddress}}, null is returned when the host could not been resolved.

The solution is to abort the attempt to find the local address if the host couldn't be resolved.



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