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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-19424) Metrics servlet doesn't work
Date Tue, 05 Dec 2017 00:10:00 GMT
Andrew Purtell created HBASE-19424:

             Summary: Metrics servlet doesn't work
                 Key: HBASE-19424
                 URL: https://issues.apache.org/jira/browse/HBASE-19424
             Project: HBase
          Issue Type: Bug
    Affects Versions: 1.4.0
            Reporter: Andrew Purtell
            Priority: Minor
             Fix For: 1.4.1, 1.5.0

In branch-1 and least we put up a servlet on "/metrics" that is Hadoop's MetricsServlet. However
HBase users are expected to pick up metrics via "/jmx". We don't mention "/metrics" or link
to it on the UI. If you attempt to access "/metrics" with head of branch-1 it errors out due
to a NPE

2017-12-04 16:06:37,403 ERROR [1874557409@qtp-1910896157-3] mortbay.log: /metrics
	at org.apache.hadoop.http.HttpServer2.isInstrumentationAccessAllowed(HttpServer2.java:1049)
	at org.apache.hadoop.metrics.MetricsServlet.doGet(MetricsServlet.java:109)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)

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