Wang Hao created YARN-3059:

             Summary: RM web page can not display NM's health report which is 
                 Key: YARN-3059
             Project: Hadoop YARN
          Issue Type: Bug
          Components: nodemanager
    Affects Versions: 2.5.1
            Reporter: Wang Hao

If the NM is healthy, it's health report can not display in RM web page.
In function reportHealthStatus of NodeHealthMonitorExecutor, I found that if 
the HealthCheckerExitStatus is successful, the output was set to a empty string 
in function setHealthStatus.
so,I change the code “setHealthStatus(true, "", now)” to 
“setHealthStatus(true,shexec.getOutput(), now)” . Then, the RM web page can 
display the NM's health report.
Maybe set the output to a empty string can decrease the data that transfer
ed between RM and NM. But I think we want to see the health report of NM in 
some cases.

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