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From "Yan Xu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MESOS-715) Allow framework followers to read log
Date Tue, 01 Oct 2013 18:36:24 GMT

    [ https://issues.apache.org/jira/browse/MESOS-715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13783200#comment-13783200
] 

Yan Xu commented on MESOS-715:
------------------------------

IIUC, you want all the followers to be *eventually* up-to-date so that when the leader is
elected and scans its local replica it will almost always see every position learned and thus
won't need to run distributed consensus to build the state in blocking mode then.

Just curious, how slow is it right now?

> Allow framework followers to read log
> -------------------------------------
>
>                 Key: MESOS-715
>                 URL: https://issues.apache.org/jira/browse/MESOS-715
>             Project: Mesos
>          Issue Type: Improvement
>            Reporter: Joe Smith
>
> If a framework has a leader election, the newly elected leader needs to re-play the log
of task transitions to build up the state of the world. It would help frameworks failover
much faster if followers were able to read the log to keep themselves primed to take over.



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