Analyzer name contains filters – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.2-7.15

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Briefly, this error occurs when an Elasticsearch analyzer is configured with filters that are not recognized or defined. This could be due to a typo in the filter name or the filter not being installed. To resolve this issue, you can check the spelling of the filter names in your analyzer configuration. If they are correct, ensure that the filters are properly installed and available in your Elasticsearch instance. If the filters are custom, make sure they are correctly defined and registered in your Elasticsearch configuration.

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This guide will help you check for common problems that cause the log ” analyzer [” + name + “] contains filters ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: analysis, index.

Log Context

Log “analyzer [” + name + “] contains filters ” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 AnalysisMode filterMode = tokenFilter.getAnalysisMode();
 if (filterMode != AnalysisMode.ALL && filterMode != mode) {
 throw new MapperException("analyzer [" + name + "] contains filters " + offendingFilters
 + " that are not allowed to run in " + mode.getReadableName() + " mode.");
 } else {
 throw new MapperException(
 "analyzer [" + name + "] contains components that are not allowed to run in " + mode.getReadableName() + " mode.");


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