[jira] Commented: (CASSANDRA-1631) dropping column families and keyspaces races with compaction and flushing

["Gary Dusbabek (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-1631?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12928325#action_12928325 ] 

Gary Dusbabek commented on CASSANDRA-1631:
------------------------------------------

This isn't going to be as simple as it was last time (shifting work on to the CompactionManager and blocking).  Part of the unload/init code, you guessed it, shifts work of the CompactionManager and blocks (index creation to be precise).  

I'm looking into ways of doing this that don't involve deadlock or refactoring large pieces of code.  Part of the problem is that we've started treating the CompactionManager as a way to synchronize access to sstables.  The problem with that is that it is very course and the jobs submitted to it do a lot more things that pure FS work.

> dropping column families and keyspaces races with compaction and flushing
> -------------------------------------------------------------------------
>
>                 Key: CASSANDRA-1631
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1631
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 0.7 beta 2
>            Reporter: Gary Dusbabek
>            Assignee: Gary Dusbabek
>             Fix For: 0.7 beta 3
>
>         Attachments: v1-0001-fix-drop-race-with-compaction.txt, v1-0002-fix-drop-race-with-flush.txt
>
>


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