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From "Jonathan Ellis (JIRA)" <>
Subject [jira] Commented: (CASSANDRA-405) Race condition with ConcurrentLinkedHashMap
Date Wed, 02 Sep 2009 14:59:32 GMT


Jonathan Ellis commented on CASSANDRA-405:

Actually, I did read your svn logs enough to note that the bug referenced on the front page
found by the ehcache people was fixed.  Too bad I missed the other, but it's not the end of
the world.

In general, I suggest not getting all pissy with the people actually performing the "additional
load testing" you claim is needed.  Early adopters are an important asset. :P

(Note that this bug is against a beta version of Cassandra, so at the lowest level the process
worked: the bug was uncovered before the final release.  Although if the front page of CLRU
weren't so out of date, or there had actually been an issue in the tracker for a bug known
for months, the pain could have been avoided.)

> Race condition with ConcurrentLinkedHashMap
> -------------------------------------------
>                 Key: CASSANDRA-405
>                 URL:
>             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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