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From "Kanak Biscuitwala (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HELIX-251) Design participant specification for new language bindings
Date Sat, 18 Jan 2014 02:18:19 GMT

     [ https://issues.apache.org/jira/browse/HELIX-251?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kanak Biscuitwala resolved HELIX-251.
-------------------------------------

    Resolution: Fixed

> Design participant specification for new language bindings
> ----------------------------------------------------------
>
>                 Key: HELIX-251
>                 URL: https://issues.apache.org/jira/browse/HELIX-251
>             Project: Apache Helix
>          Issue Type: Task
>            Reporter: Kanak Biscuitwala
>            Assignee: Kanak Biscuitwala
>
> There is interest in implementing a Helix participant in Node.js and Python. We should
determine the minimal required implementation required for a functional participant in any
language. Currently, the Helix participant does the following:
> - creates an ephemeral node under LIVEINSTANCES when it starts
> - listen to MESSAGES for controller messages (e.g. "start serving this replica" and "drop
this replica")
> - update the current state with the result of the command
> We may need to wrap some of this functionality, or we may not. Either way, we should
figure out exactly what a participant should do, keeping in mind room for potential redesigns
and ensuring that maintenance overhead is not too high.



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