[infinispan-dev] Why no use async listener executor?

Galder Zamarreño galder at redhat.com
Thu Oct 6 10:52:22 EDT 2011


On Oct 6, 2011, at 4:04 PM, Mircea Markus wrote:

> 
> On 5 Oct 2011, at 16:53, Galder Zamarreño wrote:
> 
>> Hey guys,
>> 
>> Re: https://issues.jboss.org/browse/ISPN-1396
>> 
>> While looking into this, I've discovered that we have been creating executors in cache level components, where we're calling submit from @Listener implementations.
>> 
>> For example, BaseStateTransferManagerImpl.ViewChangeListener submits a rehash task and TransactionTable.StaleTransactionCleanup submits a tasks to break locks.
>> 
>> Did the people that wrote these listeners (Dan & Mircea respectively) consider defining listeners to be called asynchronously? i.e. @Listener(sync = false)
> this can work indeed for BaseStateTransferManagerImpl.ViewChangeListener? This seems like a small change - can you modify that in the scope of ISPN-1396 or do you want me to look into it?

BaseStateTransferManagerImpl.ViewChangeListener? Dan seems to disagree. You meant TransactionTable.StaleTransactionCleanup instead?

>> 
>> Unless you have very strict requirements, the async listener executor should just work, and would lead to reuse of executors which results in lower consumption.
>> 
>> The same applies to the singleton store executor btw.
>> 
>> Surely, if we were to expand on to other use cases, async notification executor should have more than 1 max thread by default, otherwise we could easily hold up tasks.
>> 
>> Cheers,
>> --
>> Galder Zamarreño
>> Sr. Software Engineer
>> Infinispan, JBoss Cache
>> 
>> 
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> 
> 
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--
Galder Zamarreño
Sr. Software Engineer
Infinispan, JBoss Cache




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