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From "Christopher Tubbs (JIRA)" <>
Subject [jira] [Commented] (ACCUMULO-2481) Monitor should still work if HDFS + Zookeeper go away
Date Wed, 04 Jun 2014 19:29:02 GMT


Christopher Tubbs commented on ACCUMULO-2481:

Duplicate issues should link to the issue they duplicate, and be resolved as a duplicate,
with no fixVersion (the fixVersion and actual resolution should be the one that was duplicated,
the one where the work was actually done).

> Monitor should still work if HDFS + Zookeeper go away
> -----------------------------------------------------
>                 Key: ACCUMULO-2481
>                 URL:
>             Project: Accumulo
>          Issue Type: Bug
>          Components: monitor
>    Affects Versions: 1.4.4, 1.4.5, 1.5.1, 1.6.0
>         Environment: 1.4.5-SNAPSHOT on CDH4.5.0.
> Non-HA cluster with 2 workers and a single Zookeeper server.
>            Reporter: Sean Busbey
>            Assignee: Andrew George Wells
>            Priority: Minor
>             Fix For: 1.5.2, 1.6.1, 1.7.0
> 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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