[
https://issues.apache.org/jira/browse/CASSANDRA-13271?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Robert Stupp resolved CASSANDRA-13271.
--------------------------------------
Resolution: Fixed
Fix Version/s: (was: 4.x)
4.0
Thanks!
Committed as
[b9b63925f9b818637b986a300aee658df03a5500|https://github.com/apache/cassandra/commit/b9b63925f9b818637b986a300aee658df03a5500]
to [trunk|https://github.com/apache/cassandra/tree/trunk]
> Reduce lock contention for collection types and serializers
> -----------------------------------------------------------
>
> Key: CASSANDRA-13271
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13271
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: vincent royer
> Priority: Minor
> Labels: performance
> Fix For: 4.0
>
> Attachments: 0001-CASSANDRA-13271-computeIfAbsent.patch,
> 0001-CASSANDRA-13271-singleton-factory-concurrency-opimiz.patch
>
>
> By doing some performance tests, i noticed that getInstance() in
> org.apache.cassandra.db.marshal.ListType and SetType could suffer from lock
> contention on the singleton factory getInstance(). Here is a proposal to
> reduce lock contention by using a ConcurrentMap and the putIfAbsent method
> rather than a synchronized method.
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
