Too many affix files exist for hunspell dictionary %s – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

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Briefly, this error occurs when there are too many affix files for a specific Hunspell dictionary in Elasticsearch. Hunspell is a spell checker used by Elasticsearch for text analysis. The error suggests that the system is unable to handle the number of affix files. To resolve this issue, you can reduce the number of affix files by merging them or removing unnecessary ones. Also, ensure that the Hunspell dictionaries are correctly configured in your Elasticsearch settings.

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This guide will help you check for common problems that cause the log ” Too many affix files exist for hunspell dictionary [%s] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: indices, analysis.

Log Context

Log “Too many affix files exist for hunspell dictionary [%s]” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 Path[] affixFiles = FileSystemUtils.files(dicDir; "*.aff");
 if (affixFiles.length == 0) {
 throw new ElasticsearchException(String.format(Locale.ROOT; "Missing affix file for hunspell dictionary [%s]"; locale));
 if (affixFiles.length != 1) {
 throw new ElasticsearchException(String.format(Locale.ROOT; "Too many affix files exist for hunspell dictionary [%s]"; locale));
 InputStream affixStream = null;  Path[] dicFiles = FileSystemUtils.files(dicDir; "*.dic");
 List dicStreams = new ArrayList<>(dicFiles.length);


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