Cameron Zemek created CASSANDRA-21000:
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             Summary: Deleted columns are forever part of SerializationHeader
                 Key: CASSANDRA-21000
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-21000
             Project: Apache Cassandra
          Issue Type: Improvement
            Reporter: Cameron Zemek


If you delete a column and rewrite the SSTable the column is removed from the 
data, but the serialization header refers to the deleted column still. This 
means if you drop a column and rewrite sstables (eg. nodetool upgradesstables 
-a) and that column is not in use, you still can not import or load those 
SSTables into another cluster without also having to add/drop columns.



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