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From "Sammy Yu (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-405) Race condition with ConcurrentLinkedHashMap
Date Wed, 02 Sep 2009 03:10:32 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-405?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12750249#action_12750249
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Sammy Yu commented on CASSANDRA-405:
------------------------------------

Yes we have this running fine in production now.  Mentioned to jbellis other Concurrent LRU
cache implementation:
http://svn.apache.org/viewvc/lucene/solr/trunk/src/common/org/apache/solr/common/util/ConcurrentLRUCache.java?view=log
http://svn.apache.org/viewvc/lucene/solr/trunk/src/java/org/apache/solr/search/FastLRUCache.java?view=log
that we could use in 0.5

> Race condition with ConcurrentLinkedHashMap
> -------------------------------------------
>
>                 Key: CASSANDRA-405
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-405
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 0.4
>            Reporter: Chris Goffinet
>            Assignee: Jonathan Ellis
>             Fix For: 0.4
>
>         Attachments: 405.patch, stack.log.gz
>
>
> We are seeing a race condition with ConcurrentLinkedHashMap using appendToTail. We could
remove the ConcurrentLinkedHashMap for now until that's resolved.

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