Analyzer must be set for field ” + name + ” but wasn’t. – Elasticsearch Error How To Solve Related Issues



Analyzer must be set for field ” + name + ” but wasn’t. – 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 “Analyzer must be set for field ” + name + ” but wasn’t.” 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: 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”Analyzer must be set for field [” + name + “] but wasn’t.”classname  is TokenCountFieldMapper.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

iterator.remove();
  }
  }
  parseField(builder; name; node; parserContext);
  if (builder.analyzer() == null) {
  throw new MapperParsingException("Analyzer must be set for field [" + name + "] but wasn't.");
  }
  return builder;
  }
  }

Related issues to this log

We have gathered selected Q&A from the community and issues from Github, that can help fix related issues please review the following for further information :

1 What's a good alternative for the output field in Elasticsearch 5.1 Completion Suggestions? -views 1,023 ,score 6

analyzer on field [filename] must be set when search_analyzer is set. elasticsearch error -views   400,score 1



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