# Trouble running ES on Java7 with G1 Garbagecollect **URL:** \ **Category:** Elasticsearch\ **Created:** [July 18, 2013, 9:32am UTC](https://discuss.elastic.co/t/trouble-running-es-on-java7-with-g1-garbagecollect/12838 "2013-07-18T09:32:01Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Runar\_Myklebust](https://avatars.discourse-cdn.com/v4/letter/r/a6a055/32.png) [@Runar\_Myklebust](https://discuss.elastic.co/u/Runar_Myklebust)\ **Post date:** [July 18, 2013, 9:32am UTC](https://discuss.elastic.co/t/trouble-running-es-on-java7-with-g1-garbagecollect/12838/1 "2013-07-18T09:32:01Z")
We have experienced JVM-crashes when using the G1 garbagecollection on java 7 (-XX:+UseG1GC) We are running ES 0.20.6 # # A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x00007f84f5198de8, pid=21673, tid=140204359747328 # # JRE version: 7.0\_25-b15 # Java VM: Java HotSpot(TM) 64-Bit Server VM (23.25-b01 mixed mode linux-amd64 compressed oops) # Problematic frame: # J org.elasticsearch.common.trove.impl.hash.TObjectHash.insertKey(Ljava/lang/Object;)I # Is this a known issue? ## -- mvh Runar Myklebust -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**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, 2:25am UTC](https://discuss.elastic.co/t/trouble-running-es-on-java7-with-g1-garbagecollect/12838/2 "2017-07-06T02:25:48Z")
Closed on July 6, 2017, 2:25am UTC