[hibernate-dev] A synchronous JGroups backend for Hibernate Search

[Ales Justin]

> I did not think of that but an "implicit" or "auto" setting makes some
> sense.
> Just to be sure, the new immplicit setting / behavior will break the
> semantic of what's going on so it should at least but a minor version
> bump. Correct?
> 
> BTW, did you guys even found out why using sync was taking so much time?

Afaik, JGroups were waiting for response, which they didn't get -- can't remember now why not;
hence it only continued on default JGroups timeout, which is 10sec -- and we had 5 ops aka ~50sec.

-Ales

> On Mon 2013-04-15 18:00, Sanne Grinovero wrote:
>> In my first draft for HSEARCH-1296 I was automatically enabling the
>> blocking behaviour on JGroups if the worker backend was configured to
>> be synchronous (which is the default for workers),
>> but Emmanuel didn't like that and I think he has a good point:
>> 
>> The JGroups behaviour and the workers behaviour are two different
>> things; so I just separated this into a new configuration property
>> 
>> "block_waiting_ack" (boolean)
>> 
>> which of course applies only to the JGroups backends.
>> 
>> I agree it's important to keep the two separate, but also if the user
>> is configuring an ASYNC worker, he should set this option to false as
>> there is no benefit in waiting for the delivery.
>> Likewise, if SYNC is required, you would probably want to set this to true.
>> 
>> So I'm suggesting we make the default value ot "block_waiting_ack"
>> dependant on the worker execution, exposing the property as an
>> override.
>> 
>> Thoughts?
>> 
>> I guess it's much easier to understand the default behaviour if we
>> keep them separate, still I don't see much use for configuring the two
>> independently.
>> 
>> Cheers,
>> Sanne
>> 
>> https://hibernate.atlassian.net/browse/HSEARCH-1296
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