[jira] [Created] (HADOOP-12954) Add a way to change hadoop.security.token.service.use_ip

["Robert Kanter (JIRA)" <ji...@apache.org>]

Robert Kanter created HADOOP-12954:
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             Summary: Add a way to change hadoop.security.token.service.use_ip
                 Key: HADOOP-12954
                 URL: https://issues.apache.org/jira/browse/HADOOP-12954
             Project: Hadoop Common
          Issue Type: Bug
    Affects Versions: 2.6.0
            Reporter: Robert Kanter
            Assignee: Robert Kanter


Currently, {{hadoop.security.token.service.use_ip}} is set on JVM startup via:
{code:java}
  static {
    Configuration conf = new Configuration();
    boolean useIp = conf.getBoolean(
        CommonConfigurationKeys.HADOOP_SECURITY_TOKEN_SERVICE_USE_IP,
        CommonConfigurationKeys.HADOOP_SECURITY_TOKEN_SERVICE_USE_IP_DEFAULT);
    setTokenServiceUseIp(useIp);
  }
{code}

This is a problem for clients, such as Oozie, who don't add *-site.xml files to their classpath.  Oozie normally creates a {{JobClient}} and passes a {{Configuration}} to it with the proper configs we need.  However, because {{hadoop.security.token.service.use_ip}} is specified in a static block like this, and there's no API to change it, Oozie has no way to set it to the non-default value.

I propose we add a {{setConfiguration}} method which takes a {{Configuration}} and rereads {{hadoop.security.token.service.use_ip}}.  There's a few other properties that are also loaded statically on startup that can be reloaded here as well.  



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