Failed to parse licenses expected an array of licenses – 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 an array of licenses but fails to parse it, likely due to incorrect formatting or data type. To resolve this issue, you should first check the format of your licenses. Ensure they are in an array format and the data types are correct. If the error persists, try to validate your licenses or regenerate them if possible. Lastly, ensure that your Elasticsearch version supports the licenses you’re using.

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 ” failed to parse licenses expected an array of licenses ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, license.

Log Context

Log “failed to parse licenses expected an array of licenses” class name is License.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 }
 if (license == null && pre20Licenses.isEmpty() == false) {
 license = pre20Licenses.get(0);
 }
 } else {
 throw new ElasticsearchParseException("failed to parse licenses expected an array of licenses");
 }
 } else if (Fields.LICENSE.equals(currentFieldName)) {
 license = License.fromXContent(parser);
 }
 // Ignore all other fields - might be created with new version

 

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?