# Cluster keeps doing something after node failure **URL:** \ **Category:** Elasticsearch\ **Created:** [April 21, 2015, 10:19am UTC](https://discuss.elastic.co/t/cluster-keeps-doing-something-after-node-failure/23340 "2015-04-21T10:19:31Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Anton\_Martynenko](https://avatars.discourse-cdn.com/v4/letter/a/2acd7d/32.png) [@Anton\_Martynenko](https://discuss.elastic.co/u/Anton_Martynenko)\ **Post date:** [April 21, 2015, 10:19am UTC](https://discuss.elastic.co/t/cluster-keeps-doing-something-after-node-failure/23340/1 "2015-04-21T10:19:31Z")
Hi guys, We are running a cluster with 3 nodes in prod. After a node failure cluster started index reallocation. This process took several days with small pauses (for hours each). When the process finished the cluster looked fine - everything worked fast, workload was pretty low. After several days the "rebalancing" or something else started again. The node 01 (which failed earlier) has almost 100% CPU load and network traffic ~100 mbit from node 02 to node 01. The problem is that we have issues with ElasticSearch for more that a week! I have two questions 1. What and why elasticsearch is doing? 2. Why ES started "doing something" again after \>24h pause? 3. How to stop this process or understand when it gets finished? Our cliens are not happy with this terrible lags while ES is doing something I've attached a screenshot from Zabbix and our ES config which is equal for all nodes. Thanks in advance for any help -- 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/e238363d-a947-4a8b-8a84-203452edf073%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/e238363d-a947-4a8b-8a84-203452edf073%40googlegroups.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, 12:18am UTC](https://discuss.elastic.co/t/cluster-keeps-doing-something-after-node-failure/23340/2 "2017-07-06T00:18:35Z")