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https://issues.apache.org/jira/browse/YARN-5706?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15573375#comment-15573375
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Wangda Tan commented on YARN-5706:
----------------------------------

+1 

> Fail to launch SLSRunner due to NPE
> -----------------------------------
>
>                 Key: YARN-5706
>                 URL: https://issues.apache.org/jira/browse/YARN-5706
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>    Affects Versions: 3.0.0-alpha2
>            Reporter: Kai Sasaki
>            Assignee: Kai Sasaki
>         Attachments: YARN-5706.01.patch, YARN-5706.02.patch
>
>
> {code}
> java.lang.NullPointerException
>       at org.apache.hadoop.yarn.sls.web.SLSWebApp.<init>(SLSWebApp.java:88)
>       at 
> org.apache.hadoop.yarn.sls.scheduler.SLSCapacityScheduler.initMetrics(SLSCapacityScheduler.java:459)
>       at 
> org.apache.hadoop.yarn.sls.scheduler.SLSCapacityScheduler.setConf(SLSCapacityScheduler.java:153)
>       at 
> org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:76)
> {code}
> CLASSPATH for html resource is not configured properly.
> {code}
> DEBUG: Injecting share/hadoop/tools/sls/html into CLASSPATH
> DEBUG: Rejected CLASSPATH: share/hadoop/tools/sls/html (does not exist)
> {code}
> This issue can be reproduced when doing according to the documentation 
> instruction.
> http://hadoop.apache.org/docs/current/hadoop-sls/SchedulerLoadSimulator.html
> {code}
> $ cd $HADOOP_ROOT/share/hadoop/tools/sls
> $ bin/slsrun.sh
>   --input-rumen |--input-sls=<TRACE_FILE1,TRACE_FILE2,...>
>   --output-dir=<SLS_SIMULATION_OUTPUT_DIRECTORY> [--nodes=<SLS_NODES_FILE>]
>     [--track-jobs=<JOBID1,JOBID2,...>] [--print-simulation]
> {code}



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