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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-3430) Break Big Compaction Lock apart
Date Fri, 08 Mar 2013 05:06:15 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-3430?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13596830#comment-13596830
] 

Jonathan Ellis commented on CASSANDRA-3430:
-------------------------------------------

Pushed updates to https://github.com/jbellis/cassandra/tree/3430-3.  Addressed the above with
the following caveats:

bq. During truncate, we only stop compactions on the main CF. We should also stop it for indexes
too.

We stop them one at a time -- index.truncate goes through CFS.truncate and runWithCompactionsDisabled
again.  I think that's adequate; i.e., we don't need to stop compactions on the index CFs
while we clean out sstables for its parent, or vice versa.

bq. Concerning that wait in runWithCompactionsDisabled, wouldn't it make sense to move it
inside interruptCompactionFor?

My reasoning here was that for DROP CF/KS, we don't actually need to wait for the compactions
to be interrupted, since unmarkCompacting will take care of cleaning up anything that finished
after the drop does.

                
> Break Big Compaction Lock apart
> -------------------------------
>
>                 Key: CASSANDRA-3430
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3430
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Jonathan Ellis
>            Assignee: Jonathan Ellis
>            Priority: Minor
>              Labels: compaction
>             Fix For: 2.0
>
>         Attachments: 3430-1.0.txt, 3430-1.1.txt, 3430-v2.txt, 3430-v3.txt
>
>


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