[jira] [Resolved] (CASSANDRA-4556) upgrade from SizeTiered to Leveled failed because no enough free space

["Jonathan Ellis (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-4556?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Ellis resolved CASSANDRA-4556.
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    Resolution: Later

As you point out, there are a number of reasonable workarounds.  Doesn't look like it's worth writing a ton of special case code for switching from strategy X to strategy Y, but if you want to submit a patch I'll be happy to review it.
                
> upgrade from SizeTiered to Leveled failed because no enough free space
> ----------------------------------------------------------------------
>
>                 Key: CASSANDRA-4556
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4556
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: API
>    Affects Versions: 1.0.10
>         Environment: Cassandra 1.0.10, Ubuntu 64bit server.
>            Reporter: Cheng Zhang
>
> I use cassandra 1.0.10 with two data directories and SizeTieredCompactionStrategy first, after some time, the total free space is smaller than the biggest data file. At this time, I want change the compaction strategy to Leveled to save more space. But failed because there is no enough space for the biggest data file to compact.
> But when I change some code, if the biggest data file can't compact, I choose the second biggest data file to compact, the rest can be done in the same manner.The biggest data file will be compact when there is enough space. As the compaction goes by, there will be enough space.

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