Duplicate alias – How to solve this Elasticsearch error

Duplicate alias – 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 ” Duplicate alias ” 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, alias 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”Duplicate alias {}”classname  is LogicalPlanBuilder.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

// unwrap query (and validate while at it)
  Map cteRelations = new LinkedHashMap(namedQueries.size());
  for (SubQueryAlias namedQuery : namedQueries) {
  if (cteRelations.put(namedQuery.alias(); namedQuery) != null) {
  throw new ParsingException(namedQuery.source(); "Duplicate alias {}"; namedQuery.alias());
  // return WITH
  return new With(source(ctx); body; cteRelations);


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

Analyze your cluster