Log Failed to put mappings on indices – How To Solve Related Issues

Log Failed to put mappings on indices – How To Solve Related Issues

Opster Team

Jan-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 put mappings on indices ” 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: index.

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 apply mappings” classname is MapperService.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

         final Map updatedEntries;
        try {
            // only update entries if needed
            updatedEntries = internalMerge(newIndexMetaData; MergeReason.MAPPING_RECOVERY; true; true);
        } catch (Exception e) {
            logger.warn(() -> new ParameterizedMessage("[{}] failed to apply mappings"; index()); e);
            throw e;

        boolean requireRefresh = false;


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