[hibernate-dev] Infinispan tx, config and multithreading

[Łukasz Moreń]

I've tried with JBoss AS transaction manager and JBossStandaloneTM.
The result is this same in all cases - error during merge.

2009/8/12, Emmanuel Bernard <emmanuel at hibernate.org>:
> Ok I understand better now.
> Do your tests in JBoss AS with it's decent transaction manager
> (infinispan should have a config for it)
> For unit testing, force the indexing process in hibernate to use a
> single thread (I ghnk it's possible ask Sanne of you don't know how).
>
> Exposing some configuration to infinispan makes sense. can you start a
> thread explainig what is configurable and which one you think we
> should expose to hsearch users. Ideally I would like to offer one or
> two defaut config scenarios and allow to fallback to a custom config.
>
> Emmanuel
>
> On 12 août 2009, at 11:58, Łukasz Moreń <lukasz.moren at gmail.com>
> wrote:
>
>> Sorry, but my wifi does not work well today. I will try to explain
>> it more clear.
>>
>> I'm using DummyTransactionManager available for Infinispan.
>> It associates transaction with the calling thread.
>>
>> Steps to update index:
>>
>> 1. index writer acquires lock - begin of transaction
>>
>> 2. if it is necessary, index writer delegates new threads to do
>> merge work.
>> Those merge threads do not see changes made so far from begin of
>> transaction,
>> and are looking for segments which are not yet in index.
>> Changes will be visible when AD.3 is completed.
>> For tests i tried to commit transaction when merge starts and then
>> everything worked well. But then i need to start it again.
>>
>> 3. index writer releases lock - transaction is commited, all changes
>> made in this transaction are visible for other threads.
>>
>> Maybe using some other transaction manager could help?
>>
>> What about Infinispan cache configuration? Some configuration
>> mechanism should be exposed to the user,
>> or we can hardcoded one in InfinispanDirectoryProvider is enough?
>>
>>
>>
>>
>> 2009/8/12 Emmanuel Bernard <emmanuel at hibernate.org>
>> why?
>> Emmanuel Bernard
>> Pending
>> you there?
>> Emmanuel Bernard
>> Pending
>> Ok please describe in details what is going on. From what you are
>> describing the tx cannot see all segments which looks like an
>> infinispan bug to me.
>> Pending
>>
>> As a back up you can try wo transaction and see if that works
>> Emmanuel Bernard
>> Pending
>> technically the lucene index should cope with that
>> Emmanuel Bernard
>> 11:16
>> but I like this approach less
>>
>>
>>
>> Let's try and chat by email IF I'm not online, I need to run on some
>> errands today.
>>
>