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https://issues.apache.org/jira/browse/CASSANDRA-9932?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14694239#comment-14694239
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Benedict commented on CASSANDRA-9932:
-------------------------------------
Thanks. After rebasing a half-dozen times and scanning the dtest list
repeatedly, I'm as confident I can be this hasn't broken any new dtests.
Committed as e51f83b60edf1f9ee12ef6a3083d3acbf85805f7.
> 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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