Aleksey Yeschenko created CASSANDRA-6690:
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Summary: Replace EmptyColumns with updated ArrayBackedSortedColumns
Key: CASSANDRA-6690
URL: https://issues.apache.org/jira/browse/CASSANDRA-6690
Project: Cassandra
Issue Type: Improvement
Reporter: Aleksey Yeschenko
Assignee: Aleksey Yeschenko
Priority: Minor
Fix For: 2.1
Now that UnsortedColumns is gone (CASSANDRA-6630) and
TreeMapBackedSortedColumns is also gone (CASSANDRA-6662), we can also get rid
of EmptyColumns and, further, inline AbstractThreadUnsafeSortedColumns into
ABSC, leaving us with just two ColumnFamily implementations -
AtomicBTreeColumns for the memtable and ABSC for everything else.
The modified ABSC in the patch starts with the empty static array, so in terms
of memory it's about the same as EmptyColumns used to be.
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