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From "Vijay (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-957) convenience workflow for replacing dead node
Date Thu, 21 Jul 2011 01:09:58 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-957?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vijay updated CASSANDRA-957:
----------------------------

    Attachment: 0003-Make-hints-More-reliable.patch
                0002-Rework-Hints-to-be-on-token.patch
                0001-Support-token-replace.patch

Reported to 2496, Testing it took longer than expected time...

> convenience workflow for replacing dead node
> --------------------------------------------
>
>                 Key: CASSANDRA-957
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-957
>             Project: Cassandra
>          Issue Type: Wish
>          Components: Core, Tools
>    Affects Versions: 0.8.2
>            Reporter: Jonathan Ellis
>            Assignee: Vijay
>             Fix For: 1.0
>
>         Attachments: 0001-Support-Token-Replace.patch, 0001-Support-bringing-back-a-node-to-the-cluster-that-exi.patch,
0001-Support-token-replace.patch, 0002-Do-not-include-local-node-when-computing-workMap.patch,
0002-Rework-Hints-to-be-on-token.patch, 0002-Rework-Hints-to-be-on-token.patch, 0003-Make-HintedHandoff-More-reliable.patch,
0003-Make-hints-More-reliable.patch
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> Replacing a dead node with a new one is a common operation, but "nodetool removetoken"
followed by bootstrap is inefficient (re-replicating data first to the remaining nodes, then
to the new one) and manually bootstrapping to a token "just less than" the old one's, followed
by "nodetool removetoken" is slightly painful and prone to manual errors.
> First question: how would you expose this in our tool ecosystem?  It needs to be a startup-time
option to the new node, so it can't be nodetool, and messing with the config xml definitely
takes the "convenience" out.  A one-off -DreplaceToken=XXY argument?

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