[YARN-4367] SLS webapp doesn't load

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.8.0
• Fix Version/s: 2.8.0, 2.7.4
• Component/s: scheduler-load-simulator
• Target Version/s: 2.8.0, 2.7.4
• Hadoop Flags: Reviewed
• Assignee: Karthik Kambatla
• Reporter: Karthik Kambatla
• Created: 17/Nov/15 23:59
• Updated: 21/May/17 18:46
• Resolved: 18/Nov/15 21:45

Description

When I run the SLS, the webapp doesn't load and I see the following error:

15/11/17 15:33:30 INFO resourcemanager.ResourceManager: Using Scheduler: org.apache.hadoop.yarn.sls.scheduler.ResourceSchedulerWrapper
java.lang.NullPointerException
        at org.apache.hadoop.yarn.sls.web.SLSWebApp.<init>(SLSWebApp.java:87)
        at org.apache.hadoop.yarn.sls.scheduler.ResourceSchedulerWrapper.initMetrics(ResourceSchedulerWrapper.java:483)
        at org.apache.hadoop.yarn.sls.scheduler.ResourceSchedulerWrapper.setConf(ResourceSchedulerWrapper.java:181)
        at org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:76)
        at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:136)
        at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.createScheduler(ResourceManager.java:299)