# Why is segment not merged when deleted over 33%?

**URL:** <https://discuss.elastic.co/t/why-is-segment-not-merged-when-deleted-over-33/353537>\
**Category:** Elasticsearch\
**Created:** [February 19, 2024, 4:17am UTC](https://discuss.elastic.co/t/why-is-segment-not-merged-when-deleted-over-33/353537 "2024-02-19T04:17:38Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![missingcat92](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/missingcat92/32/131859_2.png) [@missingcat92](https://discuss.elastic.co/u/missingcat92)\
**Post date:** [February 19, 2024, 4:17am UTC](https://discuss.elastic.co/t/why-is-segment-not-merged-when-deleted-over-33/353537/1 "2024-02-19T04:17:38Z")

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We have an ES v7.10 instance, and every config about merge is default.  
Now we have a segment, which include 37% deleted doc (docs.count=6513192,docs.deleted=3902050), the segment is now 4.8gb, and it's not merged for about an hour.  
I've checked my index settings and here are some of them:

```auto
"max_merge_at_once" : "10",
"max_merged_segment" : "5gb",
"expunge_deletes_allowed" : "10.0",
"segments_per_tier" : "10.0",
"deletes_pct_allowed" : "33.0"

```

Deleted doc in segments is already over "deletes\_pct\_allowed", and the segment is not merged.  
I haven't tried forcemege because I do want to know about auto merge policy.  
Am I missing something?

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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:** [March 18, 2024, 4:18am UTC](https://discuss.elastic.co/t/why-is-segment-not-merged-when-deleted-over-33/353537/2 "2024-03-18T04:18:04Z")

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