Unable to find index in cluster state – How to solve this OpenSearch exception

Opster Team

Aug-23, Version: 1-2.9

Before you dig into reading this guide, have you tried asking OpsGPT what this log means? You’ll receive a customized analysis of your log.

Try OpsGPT now for step-by-step guidance and tailored insights into your OpenSearch operation.

Briefly, this error occurs when OpenSearch cannot locate the specified index in the cluster state. This could be due to the index being deleted, renamed, or not yet created. To resolve this issue, you can verify the index name for any typographical errors, check if the index exists or if it has been deleted. If the index doesn’t exist, you need to create it. If it was deleted, you may need to restore it from a backup. Also, ensure that the cluster state is updated and synchronized across all nodes.

For a complete solution to your to your search operation, try for free AutoOps for Elasticsearch & OpenSearch . With AutoOps and Opster’s proactive support, you don’t have to worry about your search operation – we take charge of it. Get improved performance & stability with less hardware.

This guide will help you check for common problems that cause the log ” Unable to find index in cluster state ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: index, cluster, shard.

Log Context

Log “Unable to find index in cluster state” class name is RemoveCorruptedShardDataCommand.java. We extracted the following from OpenSearch source code for those seeking an in-depth context :

 shardId = Objects.requireNonNull(shardIdOption.value(options); "Shard ID is required");
 indexMetadata = clusterState.metadata().index(indexName);
 }  if (indexMetadata == null) {
 throw new OpenSearchException("Unable to find index in cluster state");
 }  final IndexSettings indexSettings = new IndexSettings(indexMetadata; settings);
 if (indexSettings.isRemoteTranslogStoreEnabled()) {
 // ToDo : Need to revisit corrupt shard recovery strategy for remote store enabled indices


How helpful was this guide?

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?

Get expert answers on Elasticsearch/OpenSearch