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Posted to dev@hbase.apache.org by "Lars George (JIRA)" <ji...@apache.org> on 2015/05/26 16:24:18 UTC
[jira] [Created] (HBASE-13777) Table fragmentation display triggers
NPE on master status page
Lars George created HBASE-13777:
-----------------------------------
Summary: Table fragmentation display triggers NPE on master status page
Key: HBASE-13777
URL: https://issues.apache.org/jira/browse/HBASE-13777
Project: HBase
Issue Type: Bug
Components: UI
Affects Versions: 1.1.0
Reporter: Lars George
Steps to reproduce:
- Enable UI support for Fragmentation
{noformat}
<property>
<name>hbase.master.ui.fragmentation.enabled</name>
<value>true</value>
</property>
{noformat}
Make sure to restart HBase.
- Create NSes and table
{noformat}
hbase(main):004:0> create_namespace 'testqauat'
0 row(s) in 0.0370 seconds
hbase(main):005:0> create_namespace 'financedept'
0 row(s) in 0.0100 seconds
hbase(main):006:0> create_namespace 'engdept'
0 row(s) in 0.0090 seconds
hbase(main):007:0> create 'testqauat:testtable', 'cf1'
0 row(s) in 1.2590 seconds
=> Hbase::Table - testqauat:testtable
hbase(main):008:0> for i in 'a'..'z' do for j in 'a'..'z' do put 'testqauat:testtable', "row-#{i}#{j}", "cf1:#{j}", "#{j}" end end
{noformat}
- Reload the master UI page and you get:
{noformat}
HTTP ERROR 500
Problem accessing /master-status. Reason:
INTERNAL_SERVER_ERROR
Caused by:
java.lang.NullPointerException
at org.apache.hadoop.hbase.tmpl.master.MasterStatusTmplImpl.__jamon_innerUnit__userTables(MasterStatusTmplImpl.java:685)
at org.apache.hadoop.hbase.tmpl.master.MasterStatusTmplImpl.renderNoFlush(MasterStatusTmplImpl.java:268)
at org.apache.hadoop.hbase.tmpl.master.MasterStatusTmpl.renderNoFlush(MasterStatusTmpl.java:377)
at org.apache.hadoop.hbase.tmpl.master.MasterStatusTmpl.render(MasterStatusTmpl.java:368)
at org.apache.hadoop.hbase.master.MasterStatusServlet.doGet(MasterStatusServlet.java:81)
...
{noformat}
Note that the table.jsp page works fine, just the master page fails.
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