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From "Sean Busbey (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ACCUMULO-2481) Monitor should still work if HDFS + Zookeeper go away
Date Fri, 14 Mar 2014 21:20:54 GMT
Sean Busbey created ACCUMULO-2481:
-------------------------------------

             Summary: Monitor should still work if HDFS + Zookeeper go away
                 Key: ACCUMULO-2481
                 URL: https://issues.apache.org/jira/browse/ACCUMULO-2481
             Project: Accumulo
          Issue Type: Bug
          Components: monitor
    Affects Versions: 1.4.4, 1.4.5
         Environment: 1.4.5-SNAPSHOT on CDH4.5.0.

Non-HA cluster with 2 workers and a single Zookeeper server.
            Reporter: Sean Busbey
            Priority: Minor
             Fix For: 1.4.6


While preparing to update a test cluster, I accidentally attempted to refresh some monitor
pages after I had shut down the underlying HDFS and Zookeeper services. The page simply hung.
I've since tried loading several different pages (overview, logs, master view) and all simple
hang on the monitor's end. If I restart the underlying cluster, the pages resolve like normal.

I haven't had a chance to see if this happens on later versions, nor figure out which missing
component matters.

Expected behavior would be for the monitor to still load, albeit with a bunch of alarm bells
about everything being off.



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