# Cluster shards and how the operations are split between them

**URL:** <https://discuss.elastic.co/t/cluster-shards-and-how-the-operations-are-split-between-them/22572>\
**Category:** Elasticsearch\
**Created:** [March 8, 2015, 9:42am UTC](https://discuss.elastic.co/t/cluster-shards-and-how-the-operations-are-split-between-them/22572 "2015-03-08T09:42:02Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Michal\_Singer](https://avatars.discourse-cdn.com/v4/letter/m/d9b06d/32.png) [@Michal\_Singer](https://discuss.elastic.co/u/Michal_Singer)\
**Post date:** [March 8, 2015, 9:42am UTC](https://discuss.elastic.co/t/cluster-shards-and-how-the-operations-are-split-between-them/22572/1 "2015-03-08T09:42:02Z")

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Hi,  
I have made the following steps:

1. added 1 node, created an index with default number of shards
2. ran for a while with this configuration
3. added another node in the same cluster
4. now there are 2 nodes in the cluster, and each node contains the same  
data
5. running requests on first node. i expect for the requests to be executed  
on both nodes and then aggregrated? i see only IOPs on one node.  
Any ideas what i am doing wrong? how do i make the other node to get some  
work load also?

thanks

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<div class="post-metadata">

**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, 12:27am UTC](https://discuss.elastic.co/t/cluster-shards-and-how-the-operations-are-split-between-them/22572/2 "2017-07-06T00:27:51Z")

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Closed on July 6, 2017, 12:27am UTC