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From "Edward Capriolo (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-5051) Allow automatic cleanup after gc_grace
Date Wed, 17 Apr 2013 20:37:19 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-5051?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13634397#comment-13634397
] 

Edward Capriolo commented on CASSANDRA-5051:
--------------------------------------------

Weird edge case I thought of. How will this work if someone needs to change snitch/RF? There
might be some delta of time where I would not want cassandra to delete data even though it
is not supposed to be there. In that case it would be nice to be able to turn this feature
off.
                
> Allow automatic cleanup after gc_grace
> --------------------------------------
>
>                 Key: CASSANDRA-5051
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5051
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core
>            Reporter: Brandon Williams
>            Assignee: Vijay
>              Labels: vnodes
>             Fix For: 2.0
>
>         Attachments: 0001-5051-v4.patch, 0001-5051-with-test-fixes.patch, 0001-CASSANDRA-5051.patch,
0002-5051-remove-upgradesstable.patch, 0002-5051-remove-upgradesstable-v4.patch, 0004-5051-additional-test-v4.patch,
5051-v2.txt
>
>
> When using vnodes, after adding a new node you have to run cleanup on all the machines,
because you don't know which are affected and chances are it was most if not all of them.
 As an alternative to this intensive process, we could allow cleanup during compaction if
the data is older than gc_grace (or perhaps some other time period since people tend to use
gc_grace hacks to get rid of tombstones.)

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