Invalid group name – How to solve this Elasticsearch error

Invalid group name – 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 ” Invalid group name ” 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: 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”Invalid group name [“classname  is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
  ensureExpectedToken(XContentParser.Token.FIELD_NAME; token; parser::getTokenLocation);
  String destinationFieldName = parser.currentName();
  if (validAggMatcher.reset(destinationFieldName).matches() == false) {
  throw new ParsingException(parser.getTokenLocation(); "Invalid group name [" + destinationFieldName
  + "]. Group names can contain any character except '['; ']'; and '>'");
  token = parser.nextToken();
  ensureExpectedToken(XContentParser.Token.START_OBJECT; token; parser::getTokenLocation);


Run the Check-Up to get a customized report like this:

Analyze your cluster