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From "Hemanth Yamijala (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-4937) [HOD] Include ringmaster RPC port information in the notes attribute
Date Wed, 24 Dec 2008 04:44:46 GMT
[HOD] Include ringmaster RPC port information in the notes attribute
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                 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


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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