Expected a list or an entry of context mapping – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Before you dig into reading this guide, have you tried asking OpsGPT what this log means? You’ll receive a customized analysis of your log.

Try OpsGPT now for step-by-step guidance and tailored insights into your Elasticsearch operation.

Briefly, this error occurs when Elasticsearch expects a list or an entry of context mapping but doesn’t find it. This usually happens when there’s a mismatch between the data structure being indexed and the mapping defined in Elasticsearch. To resolve this, ensure that the data structure being indexed matches the mapping defined in Elasticsearch. Alternatively, you can update the mapping to match the data structure. Also, check for any syntax errors in your mapping definition.

For a complete solution to your to your search operation, try for free AutoOps for Elasticsearch & OpenSearch . With AutoOps and Opster’s proactive support, you don’t have to worry about your search operation – we take charge of it. Get improved performance & stability with less hardware.

This guide will help you check for common problems that cause the log ” expected a list or an entry of context mapping ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: mapping, search.

Log Context

Log “expected a list or an entry of context mapping” class name is ContextMappings.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 throw new ElasticsearchParseException("expected at least one context mapping");
 } else if (configuration instanceof Map) {
 contextMappings = Collections.singletonList(load(((Map) configuration)));
 } else {
 throw new ElasticsearchParseException("expected a list or an entry of context mapping");
 return new ContextMappings(contextMappings);
 }  private static ContextMapping load(Map contextConfig) {


How helpful was this guide?

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?

Get expert answers on Elasticsearch/OpenSearch