# Will the elasticsearch input plugin of logstash ensure no repeat reading after restart?

**URL:** <https://discuss.elastic.co/t/will-the-elasticsearch-input-plugin-of-logstash-ensure-no-repeat-reading-after-restart/332962>\
**Category:** Logstash\
**Created:** [May 9, 2023, 3:14pm UTC](https://discuss.elastic.co/t/will-the-elasticsearch-input-plugin-of-logstash-ensure-no-repeat-reading-after-restart/332962 "2023-05-09T15:14:19Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![liusanyong](https://avatars.discourse-cdn.com/v4/letter/l/ac91a4/32.png) [@liusanyong](https://discuss.elastic.co/u/liusanyong)\
**Post date:** [May 9, 2023, 3:14pm UTC](https://discuss.elastic.co/t/will-the-elasticsearch-input-plugin-of-logstash-ensure-no-repeat-reading-after-restart/332962/1 "2023-05-09T15:14:19Z")

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Hello,

If use elasticsearch input plugin of logstash to read data from a elasticsearch index and do some processing. How to ensure it will not read repeated data after the logstash restarted ?

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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:** [June 6, 2023, 3:14pm UTC](https://discuss.elastic.co/t/will-the-elasticsearch-input-plugin-of-logstash-ensure-no-repeat-reading-after-restart/332962/2 "2023-06-06T15:14:46Z")

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