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https://issues.apache.org/jira/browse/ACCUMULO-3837?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14559149#comment-14559149
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Eric Newton commented on ACCUMULO-3837:
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You can get the instance ID, but not the instance Name from HDFS.
> "Instance Name: null" appears when Monitor first starts
> -------------------------------------------------------
>
> Key: ACCUMULO-3837
> URL: https://issues.apache.org/jira/browse/ACCUMULO-3837
> Project: Accumulo
> Issue Type: Bug
> Components: monitor
> Reporter: Josh Elser
> Assignee: Eric Newton
> Fix For: 1.6.3, 1.8.0, 1.7.1
>
>
> This is one of those infuriating "it's always been like this" bugs with the
> monitor.
> The monitor lazily initializes itself with information from the Master. One
> of these is the Instance Name for the cluster. So, when you first visit the
> monitor, you'll notice that you get "Instance Name: null" in the header.
> Eventually the actual instance name will get filled in. We can do better than
> propagate "null" to our users. The monitor knows the directory in HDFS and
> thus the instance ID. It can also get the instance name from the mapping in
> HDFS. Best as I understand, it's just lazy that we don't do this.
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