Benedict created CASSANDRA-9932:
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Summary: Make all partitions btree backed
Key: CASSANDRA-9932
URL: https://issues.apache.org/jira/browse/CASSANDRA-9932
Project: Cassandra
Issue Type: Improvement
Components: Core
Reporter: Benedict
Assignee: Benedict
Fix For: 3.0.0 rc1
Following on from the other btree related refactors, this patch makes all
partition (and partition-like) objects backed by the same basic structure:
{{AbstractBTreePartition}}. With two main offshoots:
{{ImmutableBTreePartition}} and {{AtomicBTreePartition}}
The main upshot is a 30% net code reduction, meaning better exercise of btree
code paths and fewer new code paths to go wrong. A secondary upshort is that,
by funnelling all our comparisons through a btree, there is a higher likelihood
of icache occupancy and we have only one area to focus delivery of improvements
for their enjoyment by all.
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