Cannot parse boosting for – 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 is unable to parse the boosting parameter in a query. Boosting is used to increase or decrease the relevance scores of a query. The error might be due to incorrect syntax or invalid values. To resolve this, ensure that the boosting parameter is correctly formatted and contains valid values. Also, check if the field you’re trying to boost actually exists in your index. If the problem persists, consider reindexing your data or using a different method to influence the relevance scores.

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 parse boosting for {} ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “Cannot parse boosting for {}” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 fields.put(fieldName; defaultBoost);
 } else {
 try {
 fields.put(split[0]; Float.parseFloat(split[1]));
 } catch (NumberFormatException nfe) {
 throw new ParsingException(source; "Cannot parse boosting for {}"; fieldName);
 } else {
 fields.put(fieldName; defaultBoost);


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?