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From Jérémy Sevellec (JIRA) <j...@apache.org>
Subject [jira] [Issue Comment Edited] (CASSANDRA-2961) Expire dead gossip states based on time
Date Thu, 08 Sep 2011 20:22:12 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-2961?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13100637#comment-13100637
] 

Jérémy Sevellec edited comment on CASSANDRA-2961 at 9/8/11 8:21 PM:
--------------------------------------------------------------------

You can find an new version of the patch : 
- without hamcrest dependency
- compute the generation of expireTime into gossiper and calling it into the constructor of
VV
- modify SS to be more readable
- adding some log

I hope it's ok :-)

      was (Author: jsevellec):
    You can find an new version of the patch : 
- without hamcrest dependency
- compute the generation of expireTime into gossiper and calling it into the constructor of
VV
- modify SS to be more readable

I hope it's ok :-)
  
> Expire dead gossip states based on time
> ---------------------------------------
>
>                 Key: CASSANDRA-2961
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2961
>             Project: Cassandra
>          Issue Type: Improvement
>    Affects Versions: 1.0
>            Reporter: Brandon Williams
>            Priority: Minor
>             Fix For: 1.1
>
>         Attachments: trunk-2961-v2.patch, trunk-2961-v3.patch, trunk-2961.patch
>
>
> Currently dead states are held until aVeryLongTime, 3 days.  The problem is that if a
node reboots within this period, it begins a new 3 days and will repopulate the ring with
the dead state.  While mostly harmless, perpetuating the state forever is at least wasting
a small amount of bandwidth.  Instead, we can expire states based on a ttl, which will require
that the cluster be loosely time synced; within the quarantine period of 60s.

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