A dynamic template must be defined with a name – Elasticsearch Error How To Solve Related Issues



A dynamic template must be defined with a name – Elasticsearch Error How To Solve Related Issues

Updated: July-20

Elasticsearch 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 causing many errors 

 

This guide will help you check for common problems that cause the log “A dynamic template must be defined with a 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: template, index.


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 discover the cause of many errors and provides suitable actionable recommendations (free tool that requires no installation). 

Log Context

Log”A dynamic template must be defined with a name”classname  is RootObjectMapper.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

List> tmplNodes = (List>) fieldNode;
  List templates = new ArrayList();
  for (Object tmplNode : tmplNodes) {
  Map tmpl = (Map) tmplNode;
  if (tmpl.size() != 1) {
  throw new MapperParsingException("A dynamic template must be defined with a name");
  }
  Map.Entry entry = tmpl.entrySet().iterator().next();
  String templateName = entry.getKey();
  Map templateParams = (Map) entry.getValue();
  DynamicTemplate template = DynamicTemplate.parse(templateName; templateParams);







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