Jean-Daniel Cryans created HBASE-8975:
-----------------------------------------
Summary: NPE/HTTP 500 when opening the master's web UI too early
Key: HBASE-8975
URL: https://issues.apache.org/jira/browse/HBASE-8975
Project: HBase
Issue Type: Bug
Reporter: Jean-Daniel Cryans
Assignee: Jean-Daniel Cryans
Fix For: 0.98.0, 0.95.2
I'm getting an ugly NPE when trying to open the master's web UI too fast after
starting it:
{noformat}
java.lang.NullPointerException
at
org.apache.hadoop.hbase.master.HMaster.getCoprocessors(HMaster.java:2053)
at
org.apache.hadoop.hbase.master.HMaster.getClusterStatus(HMaster.java:2003)
at
org.apache.hadoop.hbase.tmpl.master.BackupMasterStatusTmplImpl.renderNoFlush(BackupMasterStatusTmplImpl.java:39)
at
org.apache.hadoop.hbase.tmpl.master.BackupMasterStatusTmpl.renderNoFlush(BackupMasterStatusTmpl.java:111)
at
org.apache.hadoop.hbase.tmpl.master.MasterStatusTmplImpl.renderNoFlush(MasterStatusTmplImpl.java:237)
at
org.apache.hadoop.hbase.tmpl.master.MasterStatusTmpl.renderNoFlush(MasterStatusTmpl.java:376)
at
org.apache.hadoop.hbase.tmpl.master.MasterStatusTmpl.render(MasterStatusTmpl.java:366)
at
org.apache.hadoop.hbase.master.MasterStatusServlet.doGet(MasterStatusServlet.java:92)
...
{noformat}
At that point the ServerManager == null.
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