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https://issues.apache.org/jira/browse/CASSANDRA-3389?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13140339#comment-13140339
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Jason Rutherglen commented on CASSANDRA-3389:
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It is probably worth looking at Accumolo's implementation of a NativeMap [1]
that implements sorted key value pairs in C++ to avoid 'stop the world' GC
problems that CSLM can cause. NM uses a read write lock, bulk reading KV pairs
in the read lock to avoid contention. I think that part may not work for
Cassandra which is more often iterative with it's reads than a purely MapReduce
motivated BigTable design, however it could be improved on.
1.
https://github.com/apache/accumulo/blob/trunk/src/server/src/main/java/org/apache/accumulo/server/tabletserver/NativeMap.java
> Evaluate CSLM alternatives for improved cache or GC performance
> ---------------------------------------------------------------
>
> Key: CASSANDRA-3389
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3389
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Jonathan Ellis
> Assignee: Brandon Williams
> Priority: Minor
> Fix For: 1.1
>
> Attachments: 0001-Replace-CSLM-with-ConcurrentSkipTreeMap.patch,
> 0001-Switch-CSLM-to-SnapTree.patch
>
>
> Ben Manes commented on
> http://www.datastax.com/dev/blog/whats-new-in-cassandra-1-0-performance that
> it's worth evaluating https://github.com/mspiegel/lockfreeskiptree and
> https://github.com/nbronson/snaptree as CSLM replacements.
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