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Posted to issues@arrow.apache.org by "Wes McKinney (JIRA)" <ji...@apache.org> on 2018/06/09 01:04:00 UTC

[jira] [Assigned] (ARROW-2551) [Plasma] Improve notification logic

     [ https://issues.apache.org/jira/browse/ARROW-2551?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wes McKinney reassigned ARROW-2551:
-----------------------------------

    Assignee: Zhijun Fu

> [Plasma] Improve notification logic
> -----------------------------------
>
>                 Key: ARROW-2551
>                 URL: https://issues.apache.org/jira/browse/ARROW-2551
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Plasma (C++)
>            Reporter: Zhijun Fu
>            Assignee: Zhijun Fu
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 0.10.0
>
>          Time Spent: 2h 40m
>  Remaining Estimate: 0h
>
> There are a few issues in current Plasma notification code:
>  * When a client subscribes to Plasma, the store pushes notifications about existing objects to ALL subscribers, while it should only push to the new subscriber.
>  * And in the above scenario, it should only push "sealed" objects to the new subscriber, while currently it pushes all objects regardless of the state.
>  * When a client disconnects, it will no longer be able to receive notifications, thus the NotificationQueue for the client should be removed from global map.



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