Marcus Eriksson created CASSANDRA-14834:
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             Summary: Avoid keeping StreamingTombstoneHistogramBuilder.Spool in 
memory during the whole compaction
                 Key: CASSANDRA-14834
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-14834
             Project: Cassandra
          Issue Type: Bug
            Reporter: Marcus Eriksson
             Fix For: 4.0


Since CASSANDRA-13444 {{StreamingTombstoneHistogramBuilder.Spool}} is allocated 
to keep around an array with 131072 * 2 * 2 integers *per written sstable* 
during the whole compaction. With LCS at times creating 1000s of sstables 
during a compaction it kills the node.



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