How To Solve Issues Related to Log – Unexpected error while joining cluster; trying again

How To Solve Issues Related to Log – Unexpected error while joining cluster; trying again

Updated: Jan-20

Elasticsearch Version: 1.7-8.0

Background

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To troubleshoot log “Unexpected error while joining cluster; trying again” it’s important to understand a few problems related to Elasticsearch concepts discovery. See bellow important tips and explanations on these concepts

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);
                        }




Related issues to this log

We have gathered selected Q&A from the community and issues from Github, that can help fix related issues please review the following for further information :

1 Github Issue Number 24027  

Best Practice For Creating An Index  

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