# Internals of cluster state update process?
**URL:** https://discuss.elastic.co/t/internals-of-cluster-state-update-process/139682
**Category:** Elasticsearch
**Created:** [July 12, 2018, 6:47am UTC](https://discuss.elastic.co/t/internals-of-cluster-state-update-process/139682 "2018-07-12T06:47:01Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@nishant.saini](https://discuss.elastic.co/u/nishant.saini)
#### Post date: [July 12, 2018, 6:47am UTC](https://discuss.elastic.co/t/internals-of-cluster-state-update-process/139682/1 "2018-07-12T06:47:02Z")
I would like to know following about cluster state in es 6.3:
1. When cluster state is updated, does the complete cluster state is sent over all the node or only the diff is sent?
2. To what size we should try to limit the cluster state size?
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [August 10, 2018, 4:24am UTC](https://discuss.elastic.co/t/internals-of-cluster-state-update-process/139682/3 "2018-08-10T04:24:14Z")
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