Must be lowercase – Elasticsearch Error How To Solve Related Issues

Must be lowercase – Elasticsearch Error How To Solve Related Issues

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 ” must be lowercase ” 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: metadata and cluster.

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”must be lowercase”classname  is MetadataCreateIndexService.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

* Validate the name for an index against some static rules and a cluster state.
  */
  public void validateIndexName(String index; ClusterState state) {
  validateIndexOrAliasName(index; InvalidIndexNameException::new);
  if (!index.toLowerCase(Locale.ROOT).equals(index)) {
  throw new InvalidIndexNameException(index; "must be lowercase");
  }
 
  // NOTE: dot-prefixed index names are validated after template application; not here
 
  if (state.routingTable().hasIndex(index)) {

 

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