# What is 'Retry failed shards'? (Cluster Reroute) **URL:** \ **Category:** Elasticsearch\ **Created:** [April 10, 2017, 8:46am UTC](https://discuss.elastic.co/t/what-is-retry-failed-shards-cluster-reroute/81775 "2017-04-10T08:46:24Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![ABChocolate](https://avatars.discourse-cdn.com/v4/letter/a/c77e96/32.png) [@ABChocolate](https://discuss.elastic.co/u/ABChocolate)\ **Post date:** [April 10, 2017, 8:46am UTC](https://discuss.elastic.co/t/what-is-retry-failed-shards-cluster-reroute/81775/1 "2017-04-10T08:46:24Z")
Hi, I'm looking for a way to prevent the loss of shard data piled up during ES shutdown. Is this document relevant? ↓ 'Cluster Reroute' \>\> 'Retry failed shards' ([https://www.elastic.co/guide/en/elasticsearch/reference/5.0/cluster-reroute.html#\_retry\_failed\_shards](https://www.elastic.co/guide/en/elasticsearch/reference/5.0/cluster-reroute.html#_retry_failed_shards)) This document is too short. What exactly is this document about? And, how do you use it? ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [April 10, 2017, 9:08am UTC](https://discuss.elastic.co/t/what-is-retry-failed-shards-cluster-reroute/81775/2 "2017-04-10T09:08:52Z")
> [@ABChocolate](#): > > I'm looking for a way to prevent the loss of shard data piled up during ES shutdown. Can you elaborate on what you mean by this please? ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [May 8, 2017, 9:21am UTC](https://discuss.elastic.co/t/what-is-retry-failed-shards-cluster-reroute/81775/3 "2017-05-08T09:21:49Z")
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