Andrew Purtell created HBASE-19424:
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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
{noformat}
2017-12-04 16:06:37,403 ERROR [1874557409@qtp-1910896157-3] mortbay.log:
/metrics
java.lang.NullPointerException
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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