# Split Brain Problem **URL:** \ **Category:** Elasticsearch\ **Created:** [May 14, 2014, 2:23pm UTC](https://discuss.elastic.co/t/split-brain-problem/17515 "2014-05-14T14:23:43Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![vidaInfinita](https://avatars.discourse-cdn.com/v4/letter/v/4491bb/32.png) [@vidaInfinita](https://discuss.elastic.co/u/vidaInfinita)\ **Post date:** [May 14, 2014, 2:23pm UTC](https://discuss.elastic.co/t/split-brain-problem/17515/1 "2014-05-14T14:23:43Z")
Good afternoon, In our system we have had a communications problem that has generated an error _Split Brain_, two master nodes within the same cluster share the same nodes. In GitHub describe this problem in the Link: > Did this corrected this case in some later version 0.90.5? -- 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). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/a56d3600-c71e-4c5f-af66-46cd10caa7cc%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/a56d3600-c71e-4c5f-af66-46cd10caa7cc%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![Ivan](https://avatars.discourse-cdn.com/v4/letter/i/df788c/32.png) [@Ivan](https://discuss.elastic.co/u/Ivan)\ **Post date:** [May 14, 2014, 3:17pm UTC](https://discuss.elastic.co/t/split-brain-problem/17515/2 "2014-05-14T15:17:55Z")
The current approach used to fix split brain problems by the Elasticsearch is not to correct the symptoms, but address the cause. Split brains occur when one of more nodes becomes unavailable, usually due to out of memory (constant GC), overwhelmed threads or network issues. The last one is hard to avoid, but there have been improvements to help with memory and threading. Do any of these cases apply to your situation? Elasticsearch is improving the consensus/election algorithm in order to not get into split brain situations, but in the mean time you should look into avoid situations that caused it. Cheers, Ivan On Wed, May 14, 2014 at 7:23 AM, Pedro Plaza García [pedrito1987@gmail.com](mailto:pedrito1987@gmail.com)wrote: > Good afternoon, > > In our system we have had a communications problem that has generated an > error _Split Brain_, two master nodes within the same cluster share the > same nodes. > In GitHub describe this problem in the Link: > [https://github.com/elasticsearch/elasticsearch/issues/2488](https://github.com/elasticsearch/elasticsearch/issues/2488) > > Did this corrected this case in some later version 0.90.5? > > -- > 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). > To view this discussion on the web visit > [https://groups.google.com/d/msgid/elasticsearch/a56d3600-c71e-4c5f-af66-46cd10caa7cc%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/a56d3600-c71e-4c5f-af66-46cd10caa7cc%40googlegroups.com)[https://groups.google.com/d/msgid/elasticsearch/a56d3600-c71e-4c5f-af66-46cd10caa7cc%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/a56d3600-c71e-4c5f-af66-46cd10caa7cc%40googlegroups.com?utm_medium=email&utm_source=footer) > . > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). -- 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). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/CALY%3DcQDVqoLc\_\_HhMTeYDUE4\_GBioE-Xc543gbKC2oxWbr%3DzCw%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CALY%3DcQDVqoLc__HhMTeYDUE4_GBioE-Xc543gbKC2oxWbr%3DzCw%40mail.gmail.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**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, 1:29am UTC](https://discuss.elastic.co/t/split-brain-problem/17515/3 "2017-07-06T01:29:25Z")