Failed to load nori user dictionary – How to solve this Elasticsearch error

Opster Team

July-21, Version: 1.7-8.0

Before you begin reading this guide, we recommend you try running the Elasticsearch Error Check-Up which analyzes 2 JSON files to detect many configuration errors.

To easily locate the root cause and resolve this issue try AutoOps for Elasticsearch & OpenSearch. It diagnoses problems by analyzing hundreds of metrics collected by a lightweight agent and offers guidance for resolving them.

This guide will help you check for common problems that cause the log ” failed to load nori user dictionary ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugins, plugin, analysis.

Log Context

Log “failed to load nori user dictionary”classname  is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 try (Reader rulesReader = new StringReader(sb.toString())) {
 } catch (IOException e) {
 throw new ElasticsearchException("failed to load nori user dictionary"; e);
 public static KoreanTokenizer.DecompoundMode getMode(Settings settings) {
 KoreanTokenizer.DecompoundMode mode = KoreanTokenizer.DEFAULT_DECOMPOUND;


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