Unknown field – Elasticsearch Error How To Solve Related Issues

Unknown field – 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 “unknown field” 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: query, 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”unknown field [{}]”classname  is DecayFunctionBuilder.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

private AbstractDistanceScoreFunction parseVariable(String fieldName; XContentParser parser; QueryShardContext context;
  MultiValueMode mode) throws IOException {
  //the field must exist; else we cannot read the value for the doc later
  MappedFieldType fieldType = context.fieldMapper(fieldName);
  if (fieldType == null) {
  throw new ParsingException(parser.getTokenLocation(); "unknown field [{}]"; fieldName);
  // dates and time and geo need special handling
  if (fieldType instanceof DateFieldMapper.DateFieldType) {


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 ElasticSearch [script] unknown field [file], parser not found -views 4,940 ,score 1

elasticsearch update gives unknown field error -views   2,662,score 3



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