Illegal state; should not have an empty cluster group when stopping; I should be there at teh very least. – How to solve related issues

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Illegal state; should not have an empty cluster group when stopping; I should be there at teh very least. – How to solve related issues

Opster Team

Feb-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you run Elasticsearch Error Check-Up which can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” Illegal state; should not have an empty cluster group when stopping; I should be there at teh very least. ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: cluster and discovery.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.

Log Context

Log “Illegal state; should not have an empty cluster group when stopping; I should be there at teh very least…” classname is LocalDiscovery.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

     
Override
    protected void doStop() {
        synchronized (clusterGroups) {
            ClusterGroup clusterGroup = clusterGroups.get(clusterName);
            if (clusterGroup == null) {
                logger.warn("Illegal state; should not have an empty cluster group when stopping; I should be there at teh very least...");
                return;
            }
            clusterGroup.members().remove(this);
            if (clusterGroup.members().isEmpty()) {
                // no more members; remove and return



 

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