# Document delete spike in elastic v7

**URL:** <https://discuss.elastic.co/t/document-delete-spike-in-elastic-v7/293903>\
**Category:** Elasticsearch\
**Created:** [January 10, 2022, 3:03pm UTC](https://discuss.elastic.co/t/document-delete-spike-in-elastic-v7/293903 "2022-01-10T15:03:32Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Idan\_Koch](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/idan_koch/32/100081_2.png) [@Idan\_Koch](https://discuss.elastic.co/u/Idan_Koch)\
**Post date:** [January 10, 2022, 3:03pm UTC](https://discuss.elastic.co/t/document-delete-spike-in-elastic-v7/293903/1 "2022-01-10T15:03:32Z")

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Hi,

Recently we are upgrading from Elasticsearch v6 to Elasticsearch v7  
we are basically doing the same thing but we see that we have huge spikes in document deleted (unlike v6) and that IOPS are higher 10x  
can you pls advise what we should be looking into?  
additionally merges spike as well.  
does v7 prerequisites changed from v6 (more memory is needed)?

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [February 7, 2022, 3:04pm UTC](https://discuss.elastic.co/t/document-delete-spike-in-elastic-v7/293903/2 "2022-02-07T15:04:20Z")

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