An index exists with the same name as the alias – How to solve this Elasticsearch error

An index exists with the same name as the alias – How to solve this Elasticsearch error

Opster Team

February-21, Version: 1.7-8.0

To understand why an index exists with the same name as the alias and what you should do to correct the situation, we recommend you run the Elasticsearch Error Check-Up. It will analyze your ES deployment to pinpoint the cause of the issue and provide you with suitable actionable recommendations to resolve the issue. The tool is free and requires no installation.

This guide will review common problems related to indices and aliases to help you understand the issue, so to get started, read the general overview on the Elasticsearch concepts: metadata, alias, cluster and index.

Log Context

Log”an index exists with the same name as the alias”classname  is AliasValidator.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

throw new IllegalArgumentException("index name is required");
  }
 
  IndexMetadata indexNamedSameAsAlias = indexLookup.apply(alias);
  if (indexNamedSameAsAlias != null) {
  throw new InvalidAliasNameException(indexNamedSameAsAlias.getIndex(); alias; "an index exists with the same name as the alias");
  }
  }
 
  void validateAliasStandalone(String alias; String indexRouting) {
  if (!Strings.hasText(alias)) {

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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