# High JVM Memory After upgrading Elasticsearch to version 1.3.4

**URL:** <https://discuss.elastic.co/t/high-jvm-memory-after-upgrading-elasticsearch-to-version-1-3-4/20480>\
**Category:** Elasticsearch\
**Created:** [October 29, 2014, 2:40pm UTC](https://discuss.elastic.co/t/high-jvm-memory-after-upgrading-elasticsearch-to-version-1-3-4/20480 "2014-10-29T14:40:04Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![costya](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/costya/32/751_2.png) [@costya](https://discuss.elastic.co/u/costya)\
**Post date:** [October 29, 2014, 2:40pm UTC](https://discuss.elastic.co/t/high-jvm-memory-after-upgrading-elasticsearch-to-version-1-3-4/20480/1 "2014-10-29T14:40:04Z")

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Hi ,  
We have upgraded our Elasticsearch cluster to version 1.3.4, after the  
upgrade we see that the JVM memory grow from 60 to 99% in a few hours, when  
the JVM memory reaches 99% some of the machines disconnect from the  
cluster and reconnect again.  
In addition , when the JVM memory reaches 90%+ it does not return to  
normal , the only thing that helps to reduce the JVM memory back to normal  
is a cluster restart.

I have added Elasticsearch diagnostic(esdiagdump.sh) script output , so you  
could check our cluster stats.  
Please advise ?

Thanks,  
Costya.

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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:** [July 6, 2017, 12:53am UTC](https://discuss.elastic.co/t/high-jvm-memory-after-upgrading-elasticsearch-to-version-1-3-4/20480/2 "2017-07-06T00:53:12Z")

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Closed on July 6, 2017, 12:53am UTC