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https://issues.apache.org/jira/browse/ACCUMULO-3958?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Josh Elser reassigned ACCUMULO-3958:
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Assignee: Josh Elser
> Monitor.fetchData should check for null instance name
> -----------------------------------------------------
>
> Key: ACCUMULO-3958
> URL: https://issues.apache.org/jira/browse/ACCUMULO-3958
> Project: Accumulo
> Issue Type: Bug
> Components: monitor
> Reporter: Josh Elser
> Assignee: Josh Elser
> Priority: Minor
> Fix For: 1.6.4, 1.7.1, 1.8.0
>
>
> Had an odd situation where the monitor would throw an NPE constantly when I
> tried to view any page.
> It was throwing a NPE trying to accessed the cached instance name. It appears
> that {{HdfsZooInstance.getInstance().getInstanceName(}} may return null, but
> the monitor code is not written to account for that.
> The monitor should check for null values before setting the instance name
> into {{cachedInstanceName}}. When the instance name is null, it should
> reschedule the timertask to try to fetch a (non-null) instance name.
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