Unexpected failure applying (version 6.8) – How to solve related issues

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Unexpected failure applying (version 6.8) – 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 failure applying (version 6.8) ” 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 failure applying [{}]” classname is ZenDiscovery.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                     }
                }

                
Override
                public void onFailure(String source; Exception e) {
                    logger.error(() -> new ParameterizedMessage("unexpected failure applying [{}]"; reason); e);
                    try {
                        // TODO: use cluster state uuid instead of full cluster state so that we don't keep reference to CS around
                        // for too long.
                        pendingStatesQueue.markAsFailed(newClusterState; e);
                    } catch (Exception inner) {



 

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