[HBASE-25077] hbck.jsp page loading fails, logs NPE in master log.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.2.3
• Fix Version/s: 3.0.0-alpha-1, 2.3.3, 2.4.0, 2.2.7
• Component/s: hbck
• Assignee: Mohammad Arshad
• Reporter: Ajeet Rai
• Created: 21/Sep/20 14:20
• Updated: 28/Sep/20 04:05
• Resolved: 27/Sep/20 06:14

Description

While testing with large data, it is observed that some time hbck page was not accessible and NPE was thrown in log.

 

【Test step】Excat Steps are not known. Observed this while executing below steps

1: Test data: 9K regions,~300 issues in my test setup

2: run hbck_chore and catalogjanitor_run multiple times 

3: Also run balancer so that region movement is happening.

4: Observe that HBCK page not available

 

2020-09-21 20:05:31,706 WARN [qtp1698322791-94] server.HttpChannel: /hbck.jsp
java.lang.NullPointerException
at org.apache.hadoop.hbase.generated.master.hbck_jsp.formatServerName(hbck_jsp.java:37)
at org.apache.hadoop.hbase.generated.master.hbck_jsp._jspService(hbck_jsp.java:144)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:111)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:844)

Issue Links

• links to: GitHub Pull Request #2433