Nick Dimiduk created HBASE-24752:
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Summary: NPE/500 accessing webui on master startup
Key: HBASE-24752
URL: https://issues.apache.org/jira/browse/HBASE-24752
Project: HBase
Issue Type: Bug
Components: master
Affects Versions: 2.3.0
Reporter: Nick Dimiduk
I got a 500 error while accessing the master web ui (non-backup master) during
startup.
{noformat}
2020-07-21 18:56:39,762 WARN org.eclipse.jetty.servlet.ServletHandler:
/master-status
java.lang.NullPointerException
at
org.apache.hadoop.hbase.tmpl.master.MasterStatusTmplImpl.renderNoFlush(MasterStatusTmplImpl.java:339)
at
org.apache.hadoop.hbase.tmpl.master.MasterStatusTmpl.renderNoFlush(MasterStatusTmpl.java:397)
at
org.apache.hadoop.hbase.tmpl.master.MasterStatusTmpl.render(MasterStatusTmpl.java:388)
at
org.apache.hadoop.hbase.master.MasterStatusServlet.doGet(MasterStatusServlet.java:79)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
...
{noformat}
{{MasterStatusTmplImpl.java:339}} appears to align with
{{MasterStatusTmpl.jamon:227}}:
{noformat}
<%if
master.getMasterCoprocessorHost().findCoprocessor("RSGroupAdminEndpoint") !=
null &&
serverManager.getOnlineServersList().size() > 0 %>
{noformat}
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