Expected group separator at offset ; found – How to solve this Elasticsearch error

Opster Team

July-20, 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 ” expected group separator at offset ; found ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: parser and plugin.


Log Context

Log “{}expected group separator at offset [{}]; found [{}]”classname  is ExpressionBuilder.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

} 
 int[] separatorPos = { 8; 13; 18; 23 };
 for (int pos : separatorPos) {
 if (lowerCase.charAt(pos) != '-') {
 throw new ParsingException(source; "{}expected group separator at offset [{}]; found [{}]";
 errorPrefix; pos; string.charAt(pos));
 }
 } 
 String HEXA = "0123456789abcdef";

 

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