Create a reproducer?
--
Cheers,
√
On Aug 6, 2016 1:18 AM, "tigerfoot" <gzol...@gmail.com> wrote:
> I should add that when it fails it just locks the stream--nothing further
> processed. No errors or other output is produced.
>
> On Friday, August 5, 2016 at 6:11:34 PM UTC-5, tigerfoot wrote:
>>
>> I'm having a nasty issue I hope someone can help me with.
>>
>> I have some stream code like this:
>>
>> val contentAssembly = Flow[CRec].map { crec =>
>> println("HERE!")
>> val x = expression.render(crec.value).
>> asInstanceOf[Message[OutputWrapper]]
>> println("X is "+x)
>> (crec, x)
>> }
>> val sendIt = Flow[(CRec, Message[OutputWrapper])].map { case (crec,
>> output) => println("THERE!"); sendAndNotifyFn(output); crec }
>>
>> src ~> filter ~> contentAssembly ~> sendIt ~> commitQ ~>
>> Sink.ignore
>> filter ~> commitQ ~> Sink.ignore
>>
>>
>> The two interesting stages are contentAssembly and sendIt. About 1/2 the
>> time this works just fine.
>> When it works, I see output from the "HERE!" message, the "X" message,
>> and the "THERE" message.
>>
>> When it doesn't work I see HERE! and X but not the THERE. As you can
>> see, there nothing in my code that happens between the "X" message in
>> contentAssembly and the THERE message in sendIt.
>>
>> My working theory is that somehow Akka Streams is sometimes losing the
>> supply/demand handshake between these two stages.
>>
>> I first noticed this on 2.4.7 then moved to 2.4.9-RC2 hoping someone had
>> found a bug, but no luck.
>>
>> What can I do to dig deeper and try to figure out what's going on between
>> contentAssembly and sendIt stages?
>>
>> Thanks,
>> Greg
>>
>> --
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>>>>>>>>>> Read the docs: http://akka.io/docs/
>>>>>>>>>> Check the FAQ:
>>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html
>>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user
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