Hi, There is a warning in Elasticsearch 6.8 version document about Close index api which states To reduce the risk of data loss, avoid keeping closed indices in your cluster for long periods of time. When a node leaves your cluster, Elasticsearch does not rebuild the lost copies of the shards in …

Thanks for the reply. So this means, there won't be any risk of data loss if a closed index is kept for a long time and a node leaves the cluster? One more add on question to this, the number of shard copies of closed indices that are safely kept are same as the number of replicas configured for t…

[image] mrudrego: One more add on question to this, the number of shard copies of closed indices that are safely kept are same as the number of replicas configured for the index ? That doesn't make sense to me sorry, can you rephrase it?

I haven't tested it myself, but that would make sense.

Close Index Api warning in ES version 6.8

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warkolm (Mark Walkom) November 30, 2020, 4:53am 2

From the 7.X documentation;

The data of opened/closed indices is automatically replicated by the cluster to ensure that enough shard copies are safely kept around at all times.

Topic		Replies	Views
Elasticsearch 7.x closed indices retain shards Elasticsearch	6	2721	July 26, 2019
Closed index shard replication prior to Elasticsearch 7.2 Elasticsearch	4	993	March 6, 2020
Closing index and memory missing warning? Elasticsearch	3	204	October 6, 2022
Recovery of closed indices Elasticsearch	9	773	May 4, 2021
Does elasticsearch automatically close replicated indices? Elasticsearch ccr-cross-cluster-replication	13	916	November 21, 2019

Close Index Api warning in ES version 6.8

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