rdhabalia opened a new pull request #2260: ack message for atmost processing guaranty URL: https://github.com/apache/incubator-pulsar/pull/2260 ### Motivation [at-most-once](https://doc.akka.io/docs/akka/current/general/message-delivery-reliability.html?language=scala) delivery can't give delivery guaranteed. If function has pulsar as a source and sink both then right now, `PulsarSinkAtMostOnceProcessor` doesn't ack message to broker so, broker restart can redeliver all messages and user might not be expecting this behavior for `at-most-once`. ### Modifications Pulsar sink acks messages regardless publish-result for `at-most-once` usecase. ### Result Pulsar sink will not redeliver duplicate messages when it is consuming messages from pulsar-source for `at-most-once`.
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