# Elasticsearch is processing incoming events/messages from Logstash in a non-sequential order

**URL:** <https://discuss.elastic.co/t/elasticsearch-is-processing-incoming-events-messages-from-logstash-in-a-non-sequential-order/345295>\
**Category:** Logstash\
**Created:** [October 18, 2023, 2:01pm UTC](https://discuss.elastic.co/t/elasticsearch-is-processing-incoming-events-messages-from-logstash-in-a-non-sequential-order/345295 "2023-10-18T14:01:54Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![leandrojmp](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/leandrojmp/32/107231_2.png) [@leandrojmp](https://discuss.elastic.co/u/leandrojmp)\
**Post date:** [October 18, 2023, 2:22pm UTC](https://discuss.elastic.co/t/elasticsearch-is-processing-incoming-events-messages-from-logstash-in-a-non-sequential-order/345295/2 "2023-10-18T14:22:05Z")

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With `pipeline.workers` set to `1` and `pipeline.ordered` set to `true`, logstash should process the events on the order they happen, but I'm not sure that this will guarantee that the events will be processed in the same order in Elasticsearch side.

Searching the forum I found this [post](https://discuss.elastic.co/t/are-bulk-index-operations-serialized/83770/6) on a topic that says that the user should not expect that the operations on a bulk request will be performed in order, not sure if this is still true, maybe someone from Elastic can provide more feedback.

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_[View the full topic](https://discuss.elastic.co/t/elasticsearch-is-processing-incoming-events-messages-from-logstash-in-a-non-sequential-order/345295)._