# Data node went offline - data loss?

**URL:** <https://discuss.elastic.co/t/data-node-went-offline-data-loss/210943>\
**Category:** Elasticsearch\
**Created:** [December 6, 2019, 9:45pm UTC](https://discuss.elastic.co/t/data-node-went-offline-data-loss/210943 "2019-12-06T21:45:14Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ntran](https://avatars.discourse-cdn.com/v4/letter/n/73ab20/32.png) [@ntran](https://discuss.elastic.co/u/ntran)\
**Post date:** [December 6, 2019, 9:45pm UTC](https://discuss.elastic.co/t/data-node-went-offline-data-loss/210943/1 "2019-12-06T21:45:14Z")

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Hi,

One of my data nodes unexpectedly went offline. I looked at the logs, however, I saw at during the time the data node was offline, there are no logs. I was able to get data node to rejoin the cluster, however, I can see there are only 8 shards in comparison to my other data nodes, which have 400+ shards. I was in the process of doing replications, and I was wondering did I lose data from the indices I didn't replicate for this data node?

Thank you,  
Nhung

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<div class="post-metadata">

**Author:** ![ntran](https://avatars.discourse-cdn.com/v4/letter/n/73ab20/32.png) [@ntran](https://discuss.elastic.co/u/ntran)\
**Post date:** [December 6, 2019, 9:47pm UTC](https://discuss.elastic.co/t/data-node-went-offline-data-loss/210943/2 "2019-12-06T21:47:21Z")

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Also, is there any way I can check if I did have data loss?

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [January 3, 2020, 9:47pm UTC](https://discuss.elastic.co/t/data-node-went-offline-data-loss/210943/3 "2020-01-03T21:47:24Z")

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