[jira] [Created] (FLINK-13130) Refactor AbstractYarnClusterDescriptor to avoid code duplication

[Shang Yuanchun (Jira)]

Charles Xu created FLINK-13130:
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             Summary: Refactor AbstractYarnClusterDescriptor to avoid code duplication
                 Key: FLINK-13130
                 URL: https://issues.apache.org/jira/browse/FLINK-13130
             Project: Flink
          Issue Type: Improvement
          Components: Deployment / YARN
    Affects Versions: 1.8.1, 1.8.0
            Reporter: Charles Xu


There are two places that checks environment variable (HADOO_CONF_DIR or YARN_CONF_DIR).

It's better to extract one method to avoid code duplication. 
{code:java}
// check if required Hadoop environment variables are set. If not, warn user
private void checkEnvironmentVariable() {
    if (System.getenv("HADOOP_CONF_DIR") == null &&
        System.getenv("YARN_CONF_DIR") == null) {
            LOG.warn("Neither the HADOOP_CONF_DIR nor the YARN_CONF_DIR environment variable is set. " +
                "The Flink YARN Client needs one of these to be set to properly load the Hadoop " +
                "configuration for accessing YARN.");
    }
}
{code}
 



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