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From "Ari Rabkin (JIRA)" <j...@apache.org>
Subject [jira] Updated: (CHUKWA-415) agent.sh should load adaptors from both checkpoint file and conf/initial_adaptors
Date Tue, 24 Nov 2009 01:16:40 GMT

     [ https://issues.apache.org/jira/browse/CHUKWA-415?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ari Rabkin updated CHUKWA-415:
------------------------------

    Release Note: Read initial_adaptors at Agent start every time, not just once.

> agent.sh should load adaptors from both checkpoint file and conf/initial_adaptors
> ---------------------------------------------------------------------------------
>
>                 Key: CHUKWA-415
>                 URL: https://issues.apache.org/jira/browse/CHUKWA-415
>             Project: Hadoop Chukwa
>          Issue Type: Improvement
>          Components: data collection
>            Reporter: Bill Graham
>            Assignee: Ari Rabkin
>             Fix For: 0.4.0
>
>         Attachments: CHUKWA-415.patch
>
>
> Currently when agent.sh is run, the agent will load the adaptors found in the config/initial_adaptors
file only of the checkpoints file doesn't exist. If the checkpoint file does exist, the initial_adaptors
file is silently ignored. This is misleading and seems like a potential cause of confusion.
> Instead both files should both be checked for adaptors, first the checkpoint file, then
the initial_adaptors file. This order would ensure that the same adaptor won't lose it's checkpoint
info or get loaded twice if the agent is bounced.
> Also, the agents.log file does a good job of reporting which adaptors are registered,
but it doesn't show where they were loaded from. This information would be useful to have
if possible.

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