2016-02-23 18:03 GMT+01:00 David Lang <[email protected]>:
> On Tue, 23 Feb 2016, Rainer Gerhards wrote:
>
>> 2016-02-23 17:38 GMT+01:00 Kane Kim <[email protected]>:
>>>
>>> Hello Rainer, thanks for the prompt reply! To give you some context: I
>>> want
>>> to write module that both using batching and also can't loose messages in
>>> any circumstances. Are you saying it is by design that rsyslog can't do
>>> that together? According to documentation rsyslog will retry if module
>>> returns any error. Do you plan to fix this in rsyslog or update
>>> documentation to say batching and retries don't work?
>>
>>
>> It depends on many things. In almost all cases, the retry should work
>> well (and does so in practice). Unfortunately, I am pretty swamped. I
>> need to go to a conference tomorrow and have had quite some unexpected
>> work today. It would probably be good if you could ping me next week
>> to see if we can look into more details what is causing you pain. But
>> I can't guarantee that I will be available early next week.
>>
>> In general, we cannot handle a fatal error here from an engine PoV,
>> because everything is already processed and we do no longer have the
>> original messages. This is simply needed if you want to process
>> messages one after another through the full config (a goal for v8 that
>> was muuuuch requested). As I said, the solution is to use batches of
>> one, because otherwise we would really need to turn back time and undo
>> everything that was already done on the messages in question by other
>> modules (including state advances).
>
>
> I thought that if a batch failed, it pushed all the messages back on the
> queue and retried with a half size batch until it got to the one message
> that could not be processed and only did a fatal fail on that message.
>
> Now, there is a big difference between a module giving a hard error "this
> message is never going to be able to be processed no matter how many times
> it's retried" vs a soft error "there is a problem delivering things to this
> destination right now, retry later". I thought the batch processing handled
> these differently.

That's no longer possible with v8, at least generically. As I said
above, we would need to turn back time.

But I really run out of time now...

Rainer
>
> David Lang
>
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