# For elasticsearch 5.x, is it necessary to set up the JVM parameter MetaspaceSize?

**URL:** <https://discuss.elastic.co/t/for-elasticsearch-5-x-is-it-necessary-to-set-up-the-jvm-parameter-metaspacesize/89322>\
**Category:** Elasticsearch\
**Created:** [June 14, 2017, 8:06am UTC](https://discuss.elastic.co/t/for-elasticsearch-5-x-is-it-necessary-to-set-up-the-jvm-parameter-metaspacesize/89322 "2017-06-14T08:06:05Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![xiaodong.hu](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/xiaodong.hu/32/20370_2.png) [@xiaodong.hu](https://discuss.elastic.co/u/xiaodong.hu)\
**Post date:** [June 14, 2017, 8:06am UTC](https://discuss.elastic.co/t/for-elasticsearch-5-x-is-it-necessary-to-set-up-the-jvm-parameter-metaspacesize/89322/1 "2017-06-14T08:06:05Z")

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Hi,  
For elasticsearch 5.x, is it necessary to set up the JVM parameter MetaspaceSize?

Thanks!

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**Author:** ![spinscale](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/spinscale/32/25011_2.png) [@spinscale](https://discuss.elastic.co/u/spinscale)\
**Post date:** [June 14, 2017, 8:14am UTC](https://discuss.elastic.co/t/for-elasticsearch-5-x-is-it-necessary-to-set-up-the-jvm-parameter-metaspacesize/89322/2 "2017-06-14T08:14:02Z")

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Hey,

it is not configured by default (so it could potentially grow unbounded). You can configure it in the `jvm.options` file if you want to.

--Alex

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<div class="post-metadata">

**Author:** ![xiaodong.hu](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/xiaodong.hu/32/20370_2.png) [@xiaodong.hu](https://discuss.elastic.co/u/xiaodong.hu)\
**Post date:** [June 14, 2017, 8:18am UTC](https://discuss.elastic.co/t/for-elasticsearch-5-x-is-it-necessary-to-set-up-the-jvm-parameter-metaspacesize/89322/3 "2017-06-14T08:18:28Z")

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Hi Alex,  
If i do not configure it, will it lead to fullgc ?

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<div class="post-metadata">

**Author:** ![spinscale](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/spinscale/32/25011_2.png) [@spinscale](https://discuss.elastic.co/u/spinscale)\
**Post date:** [June 14, 2017, 8:21am UTC](https://discuss.elastic.co/t/for-elasticsearch-5-x-is-it-necessary-to-set-up-the-jvm-parameter-metaspacesize/89322/4 "2017-06-14T08:21:53Z")

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The idea is not to generate millions of classes at runtime (for example with scripting), so metaspace should not grow infinetly with normal operations. So it depends on your use-case and might be something you should monitor.

Why are you about metaspace? Is this giving you issues?

--Alex

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<div class="post-metadata">

**Author:** ![xiaodong.hu](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/xiaodong.hu/32/20370_2.png) [@xiaodong.hu](https://discuss.elastic.co/u/xiaodong.hu)\
**Post date:** [June 14, 2017, 8:33am UTC](https://discuss.elastic.co/t/for-elasticsearch-5-x-is-it-necessary-to-set-up-the-jvm-parameter-metaspacesize/89322/5 "2017-06-14T08:33:16Z")

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Thank you for your answer, I'm just interested in it.

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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 12, 2017, 8:33am UTC](https://discuss.elastic.co/t/for-elasticsearch-5-x-is-it-necessary-to-set-up-the-jvm-parameter-metaspacesize/89322/6 "2017-07-12T08:33:24Z")

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