Cannot use expression with text variable using – 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 you try to use an expression with a text variable in Elasticsearch. This is not allowed because text fields are not optimised for operations that require numerical or date-based calculations. To resolve this issue, you can either change the field type to a numerical or date type, or use a keyword field instead. Alternatively, you can use a script to convert the text field to a numerical or date type before performing the operation.

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 ” Cannot use expression with text variable using ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: .

Log Context

Log “Cannot use expression with text variable using” class name is ExpressionAggregationScript.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 // _value isn't used in script if specialValue == null
 if (specialValue != null) {
 if (value instanceof Number) {
 specialValue.setValue(((Number) value).doubleValue());
 } else {
 throw new GeneralScriptException("Cannot use expression with text variable using " + exprScript);
 }
 }
 }
 };
 }

 

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