# Elasticsearch version 5.4.3 .bulk insert with so many disk reads,but there is no merge operation the same time

**URL:** <https://discuss.elastic.co/t/elasticsearch-version-5-4-3-bulk-insert-with-so-many-disk-reads-but-there-is-no-merge-operation-the-same-time/229390>\
**Category:** Elasticsearch\
**Created:** [April 23, 2020, 6:15am UTC](https://discuss.elastic.co/t/elasticsearch-version-5-4-3-bulk-insert-with-so-many-disk-reads-but-there-is-no-merge-operation-the-same-time/229390 "2020-04-23T06:15:13Z")\
**Posts on this page:** 2\
**Page:** 2

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**Author:** ![wfeng888](https://avatars.discourse-cdn.com/v4/letter/w/9de053/32.png) [@wfeng888](https://discuss.elastic.co/u/wfeng888)\
**Post date:** [April 29, 2020, 1:04am UTC](https://discuss.elastic.co/t/elasticsearch-version-5-4-3-bulk-insert-with-so-many-disk-reads-but-there-is-no-merge-operation-the-same-time/229390/21 "2020-04-29T01:04:40Z")

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It does has a lot of disk reads. You can see these two pictures. They were sampled at the same time. and they were not there by chance. I tested it many times, and it was almost the same every time. It's confusing to me.

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/b/e/be0de15b4232fc9b1f069292565ae5eeffb91b15.png)  
 ![image](https://us1.discourse-cdn.com/elastic/original/3X/6/c/6c9285926a9f39e6e9f29705d50efbc1c3689b92.png)

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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:** [May 27, 2020, 1:04am UTC](https://discuss.elastic.co/t/elasticsearch-version-5-4-3-bulk-insert-with-so-many-disk-reads-but-there-is-no-merge-operation-the-same-time/229390/22 "2020-05-27T01:04:41Z")

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