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From "Chris Goffinet (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-2428) Running cleanup on a node with join_ring=false removes all data
Date Wed, 06 Apr 2011 22:00:05 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-2428?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13016569#comment-13016569
] 

Chris Goffinet commented on CASSANDRA-2428:
-------------------------------------------

If curious why we were running join_ring = false after the node had data, it was because we
had ran out of space on a node, and many SSTables had been created, but unable to compact.
When we brought the node back online after moving some data off, the number of SSTables being
read w/ live traffic caused us to run out of file descriptors. So we decided to run join_ring=false
on bootup, and let compaction run without taking on traffic. This worked really well, and
we wanted to finalize our cleanup process.


> Running cleanup on a node with join_ring=false removes all data
> ---------------------------------------------------------------
>
>                 Key: CASSANDRA-2428
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2428
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Chris Goffinet
>            Priority: Critical
>
> If you need to bring up a node with join_ring=false for operator maintenance, and this
node already has data, it will end up removing the data on the node. We noticed this when
we were calling cleanup on a specific CF.

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