Karthik Palanisamy created HBASE-23262:
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Summary: Cannot load Master UI
Key: HBASE-23262
URL: https://issues.apache.org/jira/browse/HBASE-23262
Project: HBase
Issue Type: Bug
Components: master, UI
Affects Versions: 3.0.0
Reporter: Karthik Palanisamy
Assignee: Karthik Palanisamy
If no online regionservers then master UI can't be opened. This issue occurs
when using RSGroupAdminEndpoint coprocessor(RSGrouping). The master home page
tries to load rsgroup info from "hbase:rsgroup" table but currently no
regionservers up and running.
[http://172.26.70.200:16010|http://172.26.70.200:16010/]
{code:java}
HTTP ERROR 500Problem accessing /master-status. Reason: Server ErrorCaused
by:java.io.UncheckedIOException:
org.apache.hadoop.hbase.client.RetriesExhaustedException: Failed after
attempts=2, exceptions:
...
Tue Nov
05 23:58:51 UTC 2019, , org.apache.hadoop.hbase.exceptions.TimeoutIOException:
Timeout(9450ms) waiting for region location for hbase:rsgroup, row='',
replicaId=0
at
org.apache.hadoop.hbase.client.ResultScanner$1.hasNext(ResultScanner.java:55)
at
org.apache.hadoop.hbase.RSGroupTableAccessor.getAllRSGroupInfo(RSGroupTableAccessor.java:59)
at
org.apache.hadoop.hbase.tmpl.master.RSGroupListTmplImpl.renderNoFlush(RSGroupListTmplImpl.java:58)
at
org.apache.hadoop.hbase.tmpl.master.RSGroupListTmpl.renderNoFlush(RSGroupListTmpl.java:150)
at
org.apache.hadoop.hbase.tmpl.master.MasterStatusTmplImpl.renderNoFlush(MasterStatusTmplImpl.java:346)
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)
{code}
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