Shard is no longer relocating – How to solve this OpenSearch exception

Opster Team

Aug-23, Version: 1.2-2.9

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Briefly, this error occurs when a shard that was in the process of being relocated to another node in the OpenSearch cluster has completed its relocation or the relocation process was interrupted. This could be due to network issues, node failure, or the cluster’s health status. To resolve this, you can manually reroute the shard using the cluster reroute API, ensure the cluster health is green, or check the network connectivity and status of the nodes in the cluster. Also, consider adjusting the cluster settings to prevent frequent shard relocations.

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This guide will help you check for common problems that cause the log ” : shard is no longer relocating ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: index, shard.

Log Context

Log “: shard is no longer relocating” class name is We extracted the following from OpenSearch source code for those seeking an in-depth context :

 * that we concurrently end up here and therefore have to protect that we do not mark the shard as relocated when its shard routing
 * says otherwise.
 */  if (shardRouting.relocating() == false) {
 throw new IllegalIndexShardStateException(shardId; IndexShardState.STARTED; ": shard is no longer relocating " + shardRouting);
 }  if (primaryReplicaResyncInProgress.get()) {
 throw new IllegalIndexShardStateException(


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