Details
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Bug
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Status: Resolved
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Minor
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Resolution: Fixed
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1.4.0
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1.3.2, 1.4.1, 2.0.0-beta-1, 2.0.0, 1.2.7
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None
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None
Description
In branch-1 at 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 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)