Recovered indices into cluster state – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-6.8

Briefly, this error occurs when Elasticsearch recovers indices after a node or cluster failure. It’s part of the self-healing process where Elasticsearch tries to restore the cluster to a healthy state. To resolve this, ensure your cluster has enough resources (CPU, memory, disk space) to prevent failures. Regularly monitor your cluster’s health and logs to detect issues early. Also, consider implementing a robust backup strategy to recover data in case of severe failures. Lastly, ensure your cluster’s settings, like shard allocation, are properly configured to prevent overloading nodes.

This guide will help you check for common problems that cause the log ” Recovered [{}] indices into cluster_state ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: indices.

Log Context

Log “Recovered [{}] indices into cluster_state” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                     GatewayRecoveryListener.this.onFailure("failed to updated cluster state");

                public void clusterStateProcessed(String source; ClusterState oldState; ClusterState newState) {
          "recovered [{}] indices into cluster_state"; newState.metaData().indices().size());



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