[ https://issues.apache.org/jira/browse/HBASE-19424?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gavin updated HBASE-19424: -------------------------- Comment: was deleted (was: A comment with security level 'jira-users' was removed.) > Metrics servlet throws NPE > -------------------------- > > 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 > Assignee: Toshihiro Suzuki > Priority: Minor > Fix For: 1.3.2, 1.4.1, 1.5.0, 1.2.7, 2.0.0-beta-1, 2.0.0 > > Attachments: HBASE-19424.branch-1.patch > > > 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 > {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) > {noformat} -- This message was sent by Atlassian JIRA (v7.6.3#76005)