# Is Elastic search filter in log stash work in synchronous or asynchronous mode?

**URL:** <https://discuss.elastic.co/t/is-elastic-search-filter-in-log-stash-work-in-synchronous-or-asynchronous-mode/286472>\
**Category:** Logstash\
**Created:** [October 12, 2021, 10:25am UTC](https://discuss.elastic.co/t/is-elastic-search-filter-in-log-stash-work-in-synchronous-or-asynchronous-mode/286472 "2021-10-12T10:25:16Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Sandeep\_Thakur](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sandeep_thakur/32/95737_2.png) [@Sandeep\_Thakur](https://discuss.elastic.co/u/Sandeep_Thakur)\
**Post date:** [October 12, 2021, 10:25am UTC](https://discuss.elastic.co/t/is-elastic-search-filter-in-log-stash-work-in-synchronous-or-asynchronous-mode/286472/1 "2021-10-12T10:25:16Z")

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I am facing one issue in ELK when I continuous log and tried to update some fields in log stash configuration file using Elasticsearch filter plugin its updating logs sometimes but sometimes not working, so is there and load issue or synchronous or asynchronous issue and how to resolve it for apply operation sequentially and get proper updated log in output.

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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 13, 2021, 12:49am UTC](https://discuss.elastic.co/t/is-elastic-search-filter-in-log-stash-work-in-synchronous-or-asynchronous-mode/286472/2 "2021-10-13T00:49:57Z")

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Can you give an example of what you are trying to do, what is your issue and what is your logstash pipeline config?

It is confusing to understand what you are trying to do and what the issue is, also synchronous or Asynchronous in reference to what?

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [November 10, 2021, 12:49am UTC](https://discuss.elastic.co/t/is-elastic-search-filter-in-log-stash-work-in-synchronous-or-asynchronous-mode/286472/3 "2021-11-10T00:49:59Z")

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