Zoltán Zvara created YARN-5723:
----------------------------------

             Summary: Proxy Server unresponsive after printing 'accessing 
unchecked' multiple times
                 Key: YARN-5723
                 URL: https://issues.apache.org/jira/browse/YARN-5723
             Project: Hadoop YARN
          Issue Type: Bug
          Components: webapp
         Environment: Latest alpha2-SNAPSHOT running in Ubuntu 16.04 Docker 
containers.
            Reporter: Zoltán Zvara


After the first request to the Proxy Server against Spark 2.0.0 web UI, the 
following logs appear:

{{2016-10-12 14:43:54,998 INFO 
org.apache.hadoop.yarn.server.webproxy.WebAppProxyServlet: dr.who is accessing 
unchecked http://10.1.1.240:4040 which is the app master GUI of 
application_1476283324979_0002 owned by Ehnalis
2016-10-12 14:43:55,007 INFO 
org.apache.hadoop.yarn.server.webproxy.WebAppProxyServlet: dr.who is accessing 
unchecked http://10.1.1.240:4040 which is the app master GUI of 
application_1476283324979_0002 owned by Ehnalis
2016-10-12 14:43:55,015 INFO 
org.apache.hadoop.yarn.server.webproxy.WebAppProxyServlet: dr.who is accessing 
unchecked http://10.1.1.240:4040 which is the app master GUI of 
application_1476283324979_0002 owned by Ehnalis
2016-10-12 14:43:55,024 INFO 
org.apache.hadoop.yarn.server.webproxy.WebAppProxyServlet: dr.who is accessing 
unchecked http://10.1.1.240:4040 which is the app master GUI of 
application_1476283324979_0002 owned by Ehnalis
2016-10-12 14:43:55,033 INFO 
org.apache.hadoop.yarn.server.webproxy.WebAppProxyServlet: dr.who is accessing 
unchecked http://10.1.1.240:4040 which is the app master GUI of 
application_1476283324979_0002 owned by Ehnalis
2016-10-12 14:43:55,042 INFO 
org.apache.hadoop.yarn.server.webproxy.WebAppProxyServlet: dr.who is accessing 
unchecked http://10.1.1.240:4040 which is the app master GUI of 
application_1476283324979_0002 owned by Ehnalis
2016-10-12 14:43:55,051 INFO 
org.apache.hadoop.yarn.server.webproxy.WebAppProxyServlet: dr.who is accessing 
unchecked http://10.1.1.240:4040 which is the app master GUI of 
application_1476283324979_0002 owned by Ehnalis
2016-10-12 14:43:55,059 INFO 
org.apache.hadoop.yarn.server.webproxy.WebAppProxyServlet: dr.who is accessing 
unchecked http://10.1.1.240:4040 which is the app master GUI of 
application_1476283324979_0002 owned by Ehnalis}}

The Proxy Server is going to be unresponsive after these messages. If the Proxy 
Server is not on a standalone port, but instead with the RM, the default YARN 
web UI goes unresponsive as well.



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