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From "Cheng Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-4556) upgrade from SizeTiered to Leveled failed because no enough free space
Date Mon, 20 Aug 2012 06:35:37 GMT
Cheng Zhang created CASSANDRA-4556:
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             Summary: 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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