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From "Aleksey Yeschenko (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-7807) Push notification when tracing completes for an operation
Date Tue, 19 May 2015 17:23:00 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-7807?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14550810#comment-14550810
] 

Aleksey Yeschenko commented on CASSANDRA-7807:
----------------------------------------------

[~aholmber] Can you open a separate C* JIRA ticket, labeled 2.2 rc1, and copy-paste your comment
there in the description?

I'd reopen this one, but since it's already been there in a released version, it's not the
right thing to do.

> Push notification when tracing completes for an operation
> ---------------------------------------------------------
>
>                 Key: CASSANDRA-7807
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7807
>             Project: Cassandra
>          Issue Type: Sub-task
>          Components: Core
>            Reporter: Tyler Hobbs
>            Assignee: Robert Stupp
>            Priority: Minor
>              Labels: client-impacting, protocolv4
>             Fix For: 2.2.0 beta 1
>
>         Attachments: 7807-v2.txt, 7807-v3.txt, 7807-v4.txt, 7807.txt
>
>
> Tracing is an asynchronous operation, and drivers currently poll to determine when the
trace is complete (in a loop with sleeps).  Instead, the server could push a notification
to the driver when the trace completes.
> I'm guessing that most of the work for this will be around pushing notifications to a
single connection instead of all connections that have registered listeners for a particular
event type.



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