Allow 'nodetool cleanup' to run when disk is more than 50% full
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Key: CASSANDRA-1404
URL: https://issues.apache.org/jira/browse/CASSANDRA-1404
Project: Cassandra
Issue Type: Improvement
Components: Core
Reporter: Stu Hood
Priority: Minor
Compaction sums the sizes of all ranges to estimate the output size in order to
pick a target drive. Anti-compactions directly drop ranges from sstables, and
the volume of data dropped can easily be calculated using the SSTable index.
Using this knowledge in our estimate in
ColumnFamilyStore.getExpectedCompactedFileSize would allow 'nodetool cleanup'
to run when less than 50% of disk is available, in the case where ranges are
being dropped (post node-move).
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