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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-13135) Encounter response code 500 when accessing /metrics endpoint
Date Wed, 11 May 2016 22:31:12 GMT
Ted Yu created HADOOP-13135:
-------------------------------

             Summary: Encounter response code 500 when accessing /metrics endpoint
                 Key: HADOOP-13135
                 URL: https://issues.apache.org/jira/browse/HADOOP-13135
             Project: Hadoop Common
          Issue Type: Bug
    Affects Versions: 2.7.1
            Reporter: Ted Yu


When accessing /metrics endpoint on hbase master through hadoop 2.7.1, I got:
{code}
HTTP ERROR 500

Problem accessing /metrics. Reason:

    INTERNAL_SERVER_ERROR
Caused by:

java.lang.NullPointerException
	at org.apache.hadoop.http.HttpServer2.isInstrumentationAccessAllowed(HttpServer2.java:1029)
	at org.apache.hadoop.metrics.MetricsServlet.doGet(MetricsServlet.java:109)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
	at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1221)
	at org.apache.hadoop.hbase.http.lib.StaticUserWebFilter$StaticUserFilter.doFilter(StaticUserWebFilter.java:113)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
{code}
[~ajisakaa] suggested that code 500 should be 404 (NOT FOUND).



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