Unexpected error while joining cluster; trying again – How to solve related issues

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Unexpected error while joining cluster; trying again – How to solve related issues

Opster Team

Jan-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 ” Unexpected error while joining cluster; trying again ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: 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 “Unexpected error while joining cluster; trying again” classname is ZenDiscovery.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                     while (running.get() && joinThreadActive(currentThread)) {
                        try {
                            innerJoinCluster();
                            return;
                        } catch (Exception e) {
                            logger.error("unexpected error while joining cluster; trying again"; e);
                            // Because we catch any exception here; we want to know in
                            // tests if an uncaught exception got to this point and the test infra uncaught exception
                            // leak detection can catch this. In practise no uncaught exception should leak
                            assert ExceptionsHelper.reThrowIfNotNull(e);
                        }




 

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