# Force merge **URL:** \ **Category:** Elasticsearch\ **Created:** [June 13, 2018, 9:15pm UTC](https://discuss.elastic.co/t/force-merge/135796 "2018-06-13T21:15:51Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![andreacfm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/andreacfm/32/32243_2.png) [@andreacfm](https://discuss.elastic.co/u/andreacfm)\ **Post date:** [June 13, 2018, 9:15pm UTC](https://discuss.elastic.co/t/force-merge/135796/1 "2018-06-13T21:15:52Z")
I see many examples where a force merge is listed as a required step after resetting the refresh interval from -1 to 1s. Btw the docs advise to execute a force merge only on read only indexes that are not intended to be written anymore. Any clue? ---
**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\ **Post date:** [June 14, 2018, 5:16am UTC](https://discuss.elastic.co/t/force-merge/135796/2 "2018-06-14T05:16:35Z")
When you change the refresh interval I think a manual refresh is recommended, not necessarily a forcemerge unless you will no longer be writing to the index. ---
**Author:** ![andreacfm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/andreacfm/32/32243_2.png) [@andreacfm](https://discuss.elastic.co/u/andreacfm)\ **Post date:** [June 14, 2018, 9:53am UTC](https://discuss.elastic.co/t/force-merge/135796/3 "2018-06-14T09:53:08Z")
Thanks @Christian_Dahlqvist ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 12, 2018, 9:53am UTC](https://discuss.elastic.co/t/force-merge/135796/4 "2018-07-12T09:53:17Z")
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