Log No index mapper found for field: returning default postings format – How To Solve Related Issues



Log No index mapper found for field: returning default postings format – 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 causing many log errors (free and no installation required)

 

This guide will help you check for common problems that cause the log “No index mapper found for field: returning default postings format” 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, mapping.


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 discover the cause of many errors and provides suitable actionable recommendations. 

Log Context

Log “No index mapper found for field: [{}] returning default postings format” classname is PerFieldMappingPostingFormatCodec.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 
    
Override
    public PostingsFormat getPostingsFormatForField(String field) {
        final MappedFieldType fieldType = mapperService.fullName(field);
        if (fieldType == null) {
            logger.warn("no index mapper found for field: [{}] returning default postings format"; field);
        } else if (fieldType instanceof CompletionFieldMapper.CompletionFieldType) {
            return CompletionFieldMapper.CompletionFieldType.postingsFormat();
        }
        return super.getPostingsFormatForField(field);
    }








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