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From "Peeyush Bishnoi (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-4937) [HOD] Include ringmaster RPC port information in the notes attribute
Date Wed, 07 Jan 2009 08:06:44 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-4937?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Peeyush Bishnoi updated HADOOP-4937:
------------------------------------

    Attachment: hadoop-4937-2.txt

> [HOD] Include ringmaster RPC port information in the notes attribute
> --------------------------------------------------------------------
>
>                 Key: HADOOP-4937
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4937
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: contrib/hod
>            Reporter: Hemanth Yamijala
>            Assignee: Peeyush Bishnoi
>         Attachments: hadoop-4937-1.txt, hadoop-4937-2.txt, hadoop-4937.txt
>
>
> In large cluster deployments, due to node failures, it sometimes happens that HOD clusters
get allocated, but not deallocated even after the idleness limit of the cluster (the time
for which no jobs are run) exceeds. One of the main reasons for this is the ringmaster process
which is responsible for tracking and cleaning an idle cluster (of which it is a part) itself
goes down. To handle such scenarios it makes sense to centrally track the ringmaster nodes
for suspicious clusters. But since the information about which port the ringmaster is bound
to is not centrally available, this becomes impossible to monitor.
> This issue is an enhancement request to include ringmaster RPC port information along
with the JT and NN info as part of the resource manager's notes attribute so that it can be
used by any monitoring processes built around it.

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