Logstash http input plugin acknowledge, when message is persisted

[Casper_Thrane]

Hi

Is it correct understood, to make logstash return 200 after message is persisted, a persistent queue is needed. The input plugin will return it's status code, before the output pipeline is done.

Br Casper

[Badger]

No, the http plugin response is not affected by anything that happens to the event in the pipeline or outputs.

[Casper_Thrane]

But if persistent queue is used, would logstash then secure the data in the persistent queue, before acknowledge the http request?

[leandrojmp (Leandro Pereira)]

@Casper_Thrane

But if persistent queue is used, would logstash then secure the data in the persistent queue, before acknowledge the http request?

If I'm not wrong Logstash will answer a 200 to the source when it receives the event and puts it on the queue, be it a memory queue or a persistent.

Basically you have this

Source - > HTTP Input -> Queue (memory or persistent) -> filters -> output.

When the event enters the queue, then logstash will have acknowledge the message, what happens after that does not affect the input.