# Fixed bitset unloading

**URL:** <https://discuss.elastic.co/t/fixed-bitset-unloading/49095>\
**Category:** Elasticsearch\
**Created:** [May 3, 2016, 6:38pm UTC](https://discuss.elastic.co/t/fixed-bitset-unloading/49095 "2016-05-03T18:38:22Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Pawel\_Rog](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/pawel_rog/32/141223_2.png) [@Pawel\_Rog](https://discuss.elastic.co/u/Pawel_Rog)\
**Post date:** [May 3, 2016, 6:38pm UTC](https://discuss.elastic.co/t/fixed-bitset-unloading/49095/1 "2016-05-03T18:38:22Z")

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Hi,  
I am thinking of unloading fixed bitsets used for nested documents on demand. Is it possible to do this per index with API call? I don't want to use index re-open or clear cache.

Nested documents can have big memory overhead. I wanted to load bitsets on demand and close them after eg. 1 hour inactivity of a given index.

I'd really appreciate suggestions. Thanks.

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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:** [July 5, 2017, 10:54pm UTC](https://discuss.elastic.co/t/fixed-bitset-unloading/49095/2 "2017-07-05T22:54:19Z")

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