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From "Todd Lipcon (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3090) Broaden NN#monitorHealth checks
Date Wed, 14 Mar 2012 05:33:45 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13228987#comment-13228987
] 

Todd Lipcon commented on HDFS-3090:
-----------------------------------

Konstantin also pointed out that we should monitor the HTTP ports of the NameNode externally
as part of the FC health checks to make sure they're properly responding. (especially given
Jetty likes to get itself into borked states)
                
> Broaden NN#monitorHealth checks 
> --------------------------------
>
>                 Key: HDFS-3090
>                 URL: https://issues.apache.org/jira/browse/HDFS-3090
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 0.23.3
>            Reporter: Eli Collins
>
> Currently the NN implementation of HAServiceProtocol#monitorHealth just calls FSNamesystem#checkAvailableResources.
We should  extend this method to cover a broader range of resources (eg HDFS-2704), but we
should also extend NN#monitorHealth to make other unrelated health checks (eg whether all
its important service threads are running, memory usage, etc).

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