Log Failed to add mapping ; source – How To Solve Related Issues

Log Failed to add mapping ; source – How To Solve Related Issues

Opster Team

Feb-20, Version: 1.7-8.0


Before you begin reading this guide, we recommend you try running the 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 ” Failed to add mapping ; source ” to appear. It’s important to understand the issues related to the log, so to get started, read the general overview on common issues and tips related to the Elasticsearch concepts: transport.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up which analyses ES to pinpoint the cause of many errors and provides suitable actionable recommendations how to resolve them (free tool that requires no installation).

Log Context

Log “[{}] failed to add mapping [{}]; source [{}]” classname is IndicesClusterStateService.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                     logger.debug("[{}] parsed mapping [{}]; and got different sources\noriginal:\n{}\nparsed:\n{}"; index; mappingType; mappingSource; mapperService.documentMapper(mappingType).mappingSource());
                    requiresRefresh = true;
        } catch (Throwable e) {
            logger.warn("[{}] failed to add mapping [{}]; source [{}]"; e; index; mappingType; mappingSource);
            throw e;
        return requiresRefresh;


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