memtable sort is the bottleneck for range query performance
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Key: CASSANDRA-799
URL: https://issues.apache.org/jira/browse/CASSANDRA-799
Project: Cassandra
Issue Type: Improvement
Components: Core
Reporter: Jonathan Ellis
Assignee: Jonathan Ellis
Priority: Minor
Fix For: 0.6
The obvious remedy is to use a sorted map. Unfortunately, keeping the map
sorted constantly w/ TreeMap was about 30% slower than HashMap + sort back when
we were doing manual locking. Let's see what the overhead is for
ConcurrentSkiplistMap vs NBHM.
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