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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-4467) insufficient space for compaction when upgrade compaction strategy from SizeTiered to Leveled
Date Fri, 27 Jul 2012 19:19:35 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-4467?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jonathan Ellis updated CASSANDRA-4467:
--------------------------------------

             Priority: Minor  (was: Major)
    Affects Version/s:     (was: 1.0.10)
                       1.0.0
             Assignee: Yuki Morishita

Yuki, can you have a look at what would be required to make compaction able to span multiple
target directories?

My gut is that this is not a small change, in which case I'd rather mark it Later since it's
a pretty niche scenario.
                
> insufficient space for compaction when upgrade compaction strategy from SizeTiered to
Leveled
> ---------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-4467
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4467
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 1.0.0
>         Environment: Ubuntu,Oracle Java 1.7,Cassandra 1.0.10
>            Reporter: Cheng Zhang
>            Assignee: Yuki Morishita
>            Priority: Minor
>
> Cassandra has two data directories as follow:
> cassandra-disk0 use about 500G, about 250G free space
> cassandra-disk1 use about 500G, about 250G free space
> The max data file is about 400G. When I upgrade from SizeTieredCompactionStrategy to
LeveledCompactionStrategy, there is no space to do this, for the free space of every data
directory is small than the largest data file. But the total free space is enough for compaction.

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