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Briefly, this error occurs when Elasticsearch is unable to locate the Hunspell dictionary specified. Hunspell is a spellchecking tool used by Elasticsearch for text analysis. The error suggests that the dictionary file is either missing or incorrectly named. To resolve this issue, ensure that the dictionary file is present in the correct directory and that the filename matches exactly with the one specified in the Elasticsearch configuration. Alternatively, check if the dictionary is correctly configured in the Elasticsearch settings.
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This guide will help you check for common problems that cause the log ” Could not find 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 “Could not find hunspell dictionary [%s]” class name is HunspellService.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :
if (logger.isDebugEnabled()) {
logger.debug("Loading hunspell dictionary [{}]..."; locale);
}
Path dicDir = hunspellDir.resolve(locale);
if (FileSystemUtils.isAccessibleDirectory(dicDir; logger) == false) {
throw new ElasticsearchException(String.format(Locale.ROOT; "Could not find hunspell dictionary [%s]"; locale));
} // merging node settings with hunspell dictionary specific settings
Settings dictSettings = HUNSPELL_DICTIONARY_OPTIONS.get(nodeSettings);
nodeSettings = loadDictionarySettings(dicDir; dictSettings.getByPrefix(locale + "."));
