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From "Nick Bailey (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-1609) Cluster restart re-adds removed tokens
Date Tue, 12 Oct 2010 19:09:32 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-1609?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12920310#action_12920310
] 

Nick Bailey commented on CASSANDRA-1609:
----------------------------------------

So it looks like we don't remove tokens from the system table when we decomission which leads
to the following scenario:

# Node A has token 1
# Node A loadbalance to token 2
# Node A dies
# Node A removed
# Cluster restart
# Node A reappears with token 1 since that was never removed/overwritten in the system table.

At least i think thats how its happening. Not sure about one of our nodes seeing the four
decomissioned tokens and the others not.

> Cluster restart re-adds removed tokens
> --------------------------------------
>
>                 Key: CASSANDRA-1609
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1609
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 0.7 beta 2
>            Reporter: Nick Bailey
>            Assignee: Nick Bailey
>             Fix For: 0.7.0
>
>
> After a cluster restart one of our nodes began reporting tokens that had been removed
a good while ago (week or more) in it's nodetool ring output.  This probably has something
to do with our change to persist the ring in CASSANDRA-1518 and removetoken changes in CASSANDRA-1216.
The node didn't actually gossip the removed tokens so they showed up in TMD but not gossip.
> Additionally all nodes began reporting a node that had been removed maybe an hour ago.
 

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