Cannot set current cluster state while waiting for a cluster state change – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

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Briefly, this error occurs when an attempt is made to change the current cluster state while Elasticsearch is still processing a previous cluster state change. This could be due to a high load or slow network causing delays in state changes. To resolve this issue, you can try the following: 1) Increase the timeout settings for cluster state changes. 2) Optimize your cluster to handle high loads better, this could involve adding more nodes or increasing hardware resources. 3) Check your network for any issues that could be causing delays and fix them.

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This guide will help you check for common problems that cause the log ” cannot set current cluster state while waiting for a cluster state change ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: cluster.

Log Context

Log “cannot set current cluster state while waiting for a cluster state change” class name is ClusterStateObserver.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 }  /** sets the last observed state to the currently applied cluster state and returns it */
 public ClusterState setAndGetObservedState() {
 if (observingContext.get() != null) {
 throw new ElasticsearchException("cannot set current cluster state while waiting for a cluster state change");
 }
 ClusterState clusterState = clusterApplierService.state();
 lastObservedVersion = clusterState.version();
 return clusterState;
 }

 

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