# Parent circuit breaker calculation seems to be wrong with version 7.x **URL:** https://discuss.elastic.co/t/parent-circuit-breaker-calculation-seems-to-be-wrong-with-version-7-x/183530 **Category:** Elasticsearch **Created:** [May 30, 2019, 12:57pm UTC](https://discuss.elastic.co/t/parent-circuit-breaker-calculation-seems-to-be-wrong-with-version-7-x/183530 "2019-05-30T12:57:40Z") **Posts on this page:** 1 **Showing post:** 11
### Author: ![e-orz](https://avatars.discourse-cdn.com/v4/letter/e/b2d939/32.png) [@e-orz](https://discuss.elastic.co/u/e-orz) #### Post date: [June 16, 2019, 8:22am UTC](https://discuss.elastic.co/t/parent-circuit-breaker-calculation-seems-to-be-wrong-with-version-7-x/183530/11 "2019-06-16T08:22:19Z")
Hi, @danielmitterdorfer, Sorry for the late reply, it took me some time to make the tests. - Switching to CMS solved the issue. The heap size never got big and the parent circuit breaker was never triggered. Back to G1GC: I ran the scenario again, waited for the parent circuit breaker to be triggered and watched the gc.log file. It took it minutes to come back to life. During that time **there were not GCs in the gc.log file**! It seems that the GC already freed the memory and somehow the process thinks that it's still taken. I got the feeling you are doing your tests against JDK11 (see this [discussion](https://discuss.elastic.co/t/bundled-jdk-with-version-7-0-x/180684)). I replaced the bundled JDK with the 11 version. Things were much better. Even though that the memory was cleaned after 75% it was still cleaned when it ran out of memory and the circuit breaker wasn't triggered. But even with it after several tries it was triggered but only for a short period of time and then the memory was cleaned and the process could process commands. So my questions are: 1. Are you using CMS in your internal tests? 2. Is JDK 12 also used during tests or only JDK 11? 3. A bit of a different topic, is there a reason why the stats were also affected by the circuit breaker? It makes debugging the issue harder. Eli --- _[View the full topic](https://discuss.elastic.co/t/parent-circuit-breaker-calculation-seems-to-be-wrong-with-version-7-x/183530)._