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https://issues.apache.org/jira/browse/CASSANDRA-8205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14192366#comment-14192366
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Michael Shuler commented on CASSANDRA-8205:
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SNAPSHOT packages are built on CassCI, if you ever want to grab a tar of the
latest commits as they happen: http://cassci.datastax.com/job/cassandra-2.1/
> ColumnFamilyMetrics#totalDiskSpaceUsed gets wrong value when SSTable is
> deleted
> -------------------------------------------------------------------------------
>
> Key: CASSANDRA-8205
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8205
> Project: Cassandra
> Issue Type: Bug
> Reporter: Yuki Morishita
> Assignee: Yuki Morishita
> Priority: Minor
> Fix For: 2.0.12, 2.1.2
>
> Attachments: 0001-ColumnFamilyMetrics-size-metrics-test.patch,
> 8205-2.0.txt
>
>
> ColumnFamilyMetrics#totalDiskSpaceUsed is decremented when actual SSTables
> files are deleted from disk. The amount of decrement is calculated at the
> beginning of SSTableReader instantiation(through
> [SSTableDeletionTask|https://github.com/apache/cassandra/blob/cassandra-2.0.11/src/java/org/apache/cassandra/io/sstable/SSTableDeletingTask.java#L56]).
> But the size can change because Summary.db file may be re-created after
> SSTableReader instantiation, and that leads to calculate wrong value for
> totalDiskSpaceUsed.
> I attached unit test file for 2.0, but you can also compare the value after
> doing "TRUNCATE".
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