# Elasticsearch Index Split **URL:** \ **Category:** Elasticsearch\ **Created:** [October 1, 2021, 5:32am UTC](https://discuss.elastic.co/t/elasticsearch-index-split/285649 "2021-10-01T05:32:47Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![tusharnemade](https://avatars.discourse-cdn.com/v4/letter/t/67e7ee/32.png) [@tusharnemade](https://discuss.elastic.co/u/tusharnemade)\ **Post date:** [October 1, 2021, 5:32am UTC](https://discuss.elastic.co/t/elasticsearch-index-split/285649/1 "2021-10-01T05:32:47Z")
Hello Team I am using Elasticsearch version 7.8.0 I used API "`SPLIT`" to break my big index into multiple shards. After split was concluded successfully.... I found that my new SPLITTED Index [`myindex-000797-sp`] is double the size of Source Index ... ```auto health status index uuid pri rep docs.count docs.deleted store.size pri.store.size green open myindex-000797 aHevVd8iSZyy4Wmfg1Q4rw 5 1 1057316946 0 1.5tb 798.9gb green open myindex-000797-sp FUU40j43SiKNkDk1Bprbcg 10 1 1057316946 829935320 3.1tb 1.6tb ``` Could you please help me to understand why is so ... and how should i reduce the SIZE of new SPLITTED Index. Thanks ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [October 1, 2021, 5:41am UTC](https://discuss.elastic.co/t/elasticsearch-index-split/285649/2 "2021-10-01T05:41:05Z")
Try running a force merge on the new index, you need to purge the deleted documents. Also, 7.8 is nearly [EOL](https://www.elastic.co/support/eol), please consider upgrading 🙂 ---
**Author:** ![tusharnemade](https://avatars.discourse-cdn.com/v4/letter/t/67e7ee/32.png) [@tusharnemade](https://discuss.elastic.co/u/tusharnemade)\ **Post date:** [October 4, 2021, 3:41am UTC](https://discuss.elastic.co/t/elasticsearch-index-split/285649/3 "2021-10-04T03:41:12Z")
Hello @warkolm Thank You for your suggestion .. It was helped me .. ```auto health status index uuid pri rep docs.count docs.deleted store.size pri.store.size green open myindex-000797-sp FUU40j43SiKNkDk1Bprbcg 10 1 1057316946 0 1.4tb 533.5gb ``` By this we can conclude that , after splitting the index , we must run `force merge` to release the unwanted occupied space. Regarding Upgrading Elasticsearch from version 7.8.0 to new one will take some time ... as many other API's are related to this cluster. We will do it .. but not very soon.. Thank You for your response. ---
**Author:** ![tusharnemade](https://avatars.discourse-cdn.com/v4/letter/t/67e7ee/32.png) [@tusharnemade](https://discuss.elastic.co/u/tusharnemade)\ **Post date:** [October 4, 2021, 3:45am UTC](https://discuss.elastic.co/t/elasticsearch-index-split/285649/4 "2021-10-04T03:45:05Z")
Now my second question is : If you see REPLICA sizes ... ```auto index shard prirep state docs store ip node myindex-000797-sp 3 r STARTED 104626098 158.2gb 10.10.10.250 ESN-7 myindex-000797-sp 3 p STARTED 104626098 52.7gb 10.10.10.248 ESN-5 myindex-000797-sp 5 r STARTED 104627552 159.9gb 10.10.10.247 ESN-4 myindex-000797-sp 5 p STARTED 104627552 52.9gb 10.10.10.244 ESN-1 myindex-000797-sp 2 p STARTED 104625084 52.7gb 10.10.10.248 ESN-5 myindex-000797-sp 2 r STARTED 104625084 52.7gb 10.10.10.244 ESN-1 myindex-000797-sp 7 p STARTED 104620908 52.7gb 10.10.10.246 ESN-3 myindex-000797-sp 7 r STARTED 104620908 160gb 10.10.10.247 ESN-4 myindex-000797-sp 9 p STARTED 107395688 54.1gb 10.10.10.245 ESN-2 myindex-000797-sp 9 r STARTED 107395688 54.1gb 10.10.10.247 ESN-4 myindex-000797-sp 6 p STARTED 107386745 54.1gb 10.10.10.246 ESN-3 myindex-000797-sp 6 r STARTED 107386745 54.1gb 10.10.10.249 ESN-6 myindex-000797-sp 1 r STARTED 107388915 54.1gb 10.10.10.246 ESN-3 myindex-000797-sp 1 p STARTED 107388915 54.1gb 10.10.10.250 ESN-7 myindex-000797-sp 4 r STARTED 107382031 159.9gb 10.10.10.249 ESN-6 myindex-000797-sp 4 p STARTED 107382031 54.1gb 10.10.10.244 ESN-1 myindex-000797-sp 8 p STARTED 104643368 52.9gb 10.10.10.245 ESN-2 myindex-000797-sp 8 r STARTED 104643368 52.9gb 10.10.10.249 ESN-6 myindex-000797-sp 0 p STARTED 104620557 52.7gb 10.10.10.250 ESN-7 myindex-000797-sp 0 r STARTED 104620557 52.8gb 10.10.10.248 ESN-5 ``` Its still has some of them as 3x times of PRIMARY shard. How to fix this ? ---
**Author:** ![tusharnemade](https://avatars.discourse-cdn.com/v4/letter/t/67e7ee/32.png) [@tusharnemade](https://discuss.elastic.co/u/tusharnemade)\ **Post date:** [October 4, 2021, 6:33am UTC](https://discuss.elastic.co/t/elasticsearch-index-split/285649/5 "2021-10-04T06:33:28Z")
> [@tusharnemade](#): > > ```auto > myindex-000797-sp 3 r STARTED 104626098 158.2gb 10.10.10.250 ESN-7 > > ``` Now After Reallocating Them to another nodes of same cluster ... has free the space from REPLICA's .. ```auto index shard prirep state docs store ip node myindex-000797-sp 0 p STARTED 104620557 52.7gb 10.10.10.254 ESNW-4 myindex-000797-sp 0 r STARTED 104620557 52.7gb 10.10.10.11 ESNW-13 myindex-000797-sp 1 r STARTED 107388915 54.1gb 10.10.10.252 ESNW-2 myindex-000797-sp 1 p STARTED 107388915 54.1gb 10.10.10.4 ESNW-6 myindex-000797-sp 2 r STARTED 104625084 52.7gb 10.10.10.11 ESNW-13 myindex-000797-sp 2 p STARTED 104625084 52.7gb 10.10.10.5 ESNW-7 myindex-000797-sp 3 p STARTED 104626098 52.7gb 10.10.10.252 ESNW-2 myindex-000797-sp 3 r STARTED 104626098 52.7gb 10.10.10.9 ESNW-11 myindex-000797-sp 4 r STARTED 107382031 54.1gb 10.10.10.251 ESNW-1 myindex-000797-sp 4 p STARTED 107382031 54.1gb 10.10.10.253 ESNW-3 myindex-000797-sp 5 p STARTED 104627552 52.9gb 10.10.10.7 ESNW-9 myindex-000797-sp 5 r STARTED 104627552 52.9gb 10.10.10.5 ESNW-7 myindex-000797-sp 6 p STARTED 107386745 54.1gb 10.10.10.6 ESNW-8 myindex-000797-sp 6 r STARTED 107386745 54.1gb 10.10.10.8 ESNW-10 myindex-000797-sp 7 r STARTED 104620908 52.7gb 10.10.10.8 ESNW-10 myindex-000797-sp 7 p STARTED 104620908 52.7gb 10.10.10.10 ESNW-12 myindex-000797-sp 8 r STARTED 104643368 52.9gb 10.10.10.13 ESNW-15 myindex-000797-sp 8 p STARTED 104643368 52.9gb 10.10.10.12 ESNW-14 myindex-000797-sp 9 r STARTED 107395688 54.1gb 10.10.10.6 ESNW-8 myindex-000797-sp 9 p STARTED 107395688 54.1gb 10.10.10.3 ESNW-5 ``` ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [November 1, 2021, 6:34am UTC](https://discuss.elastic.co/t/elasticsearch-index-split/285649/6 "2021-11-01T06:34:03Z")
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