[infinispan-dev] Write Skew issue (versioning)

[Mircea Markus]

Looks like a bug, mind creating a JIRA for it?

On 24 Jan 2012, at 21:45, Pedro Ruivo wrote:
> Hi,
> 
> yes I have the versioning enabled. Like you said, I've posted in the forum too [1].
> 
> btw, the ISPN config is here [2]
> 
> [1] -- https://community.jboss.org/thread/177846
> [2] -- http://pastebin.com/UCxGXw3K
> 
> Cheers,
> Pedro
> 
> On 24-01-2012 19:15, Mircea Markus wrote:
>> 
>> Hi Pedro and thanks for reporting this.
>> Do you have versioning enabled? Otherwise the writeSkewCheck won't be performed at commit time. 
>> If you do have versioning enabled, may I suggest to take this on the user forums[1] - this way it would be easier for other users that have the same problem to find it.
>> 
>> [1] https://community.jboss.org/community/infinispan?view=discussions&start=0
>> 
>> On 24 Jan 2012, at 18:42, Pedro Ruivo wrote:
>>> Hi,
>>> 
>>> I think I have spotted a problem with the write skew check 
>>> implementation based on versioning.
>>> 
>>> I've made this test to confirm:
>>> 
>>> I have a global counter that is incremented concurrently by two 
>>> different nodes, running ISPN with Repeatable Read with write skew 
>>> enabled. I expected that each successfully transaction will commit a 
>>> different value.
>>> 
>>> In detail, each node do the following:
>>> 
>>> beginTx
>>> Integer count = cache.get("counter");
>>> count = count + 1;
>>> cache.put("counter", count)
>>> commitTx
>>> 
>>> To avoid errors, I've run this test on two ISPN versions: 5.1.0.CR4 and 
>>> 5.0.1.Final. In 5.0.1.Final, it works as expected. However, on 5.1.0.CR4 
>>> I have a lot of repeated values. After a first check at the code, I've 
>>> the impression that the problem may be due to that the version numbers 
>>> of the keys for which the write skew check should be run is not sent 
>>> with the prepare command.
>>> 
>>> Cheers,
>>> Pedro Ruivo
>>> _______________________________________________
>>> infinispan-dev mailing list
>>> infinispan-dev at lists.jboss.org
>>> https://lists.jboss.org/mailman/listinfo/infinispan-dev
>> 
>> 
>> 
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