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From "Josh Elser (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ACCUMULO-3837) "Instance Name: null" appears when Monitor first starts
Date Wed, 20 May 2015 19:01:00 GMT
Josh Elser created ACCUMULO-3837:
------------------------------------

             Summary: "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
             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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