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

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 can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” expected group separator at offset ; found ” to appear. It’s important to understand the issues related to the log, so to get started, read the general overview on common issues and tips related to the Elasticsearch concepts: parser and plugin.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up which analyses ES to pinpoint the cause of many errors and provides suitable actionable recommendations how to resolve them (free tool that requires no installation).

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";

Run the Check-Up to get customized recommendations like this:

error

Heavy merges detected in specific nodes

error-img

Description

A large number of small shards can slow down searches and cause cluster instability. Some indices have shards that are too small…

error-img

Recommendations Based on your specific ES deployment you should…

Based on your specific ES deployment you should…

1

X-PUT curl -H [a customized recommendation]

 

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