Re: What happens if a transaction fails to serialize?

Serialization: in parallel for best performance
Writing and physical sync'ing (FileDescriptor.sync()) to disk: batched
for best performance
Execution: sequenced.

You can run 1500 threads on a 4-yr-old Celeron notebook running 700
average-sized transactions per second.

See you, Klaus.



On Fri, Apr 23, 2010 at 5:59 PM, Ross Rick <[email protected]> wrote:
> Ah.. excellent.   One less worry.    I was under the impression that for
> speed reasons those two were forked.
> R
> On Apr 23, 2010, at 1:28 PM, Justin T. Sampson wrote:
>
> On Fri, Apr 23, 2010 at 1:08 PM, Ross Rick <[email protected]> wrote:
>>
>> As I understand it, application control is returned to the caller when the
>> transaction completes in memory, so I'm wondering what happens if the
>> journaling farts, especially after control has been returned.
>>
>> Should be damn rare, of course, just wondering if this has been addressed.
>
> As of Prevayler 2.3 at least, transactions are serialized (turned into bytes
> by Java serialization) before anything else happens, so if serialization
> fails the call to execute(Transaction) will throw the exception thrown by
> the serialization and Prevayler is unaffected.
> Cheers,
> Justin
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