Unknown object property fieldName – 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 encounters an unknown field in the JSON object during indexing or querying. This could be due to a typo in the field name or the field not being defined in the mapping. To resolve this issue, you can either correct the field name if it’s a typo, or update the index mapping to include the new field. Alternatively, you can set “ignore_malformed” to true in your index settings to ignore such errors, but this could lead to data loss or incorrect search results.

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 ” Unknown object property: [” + fieldName + “] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: rest, plugin.

Log Context

Log “Unknown object property: [” + fieldName + “]” class name is RestGraphAction.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 } else {
 throw new ElasticsearchParseException("Unknown property: [" + fieldName + "]");
 }
 }
 } else {
 throw new ElasticsearchParseException("Unknown object property: [" + fieldName + "]");
 }
 } else {
 throw new ElasticsearchParseException("Unknown object property: [" + fieldName + "]");
 }
 }

 

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