The set of patterns is too complex to evaluate – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.12-8.6

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 evaluate a complex set of patterns due to its limitations. This usually happens when there are too many wildcard expressions in the index patterns. To resolve this issue, you can simplify the patterns by reducing the number of wildcards or splitting the query into multiple simpler queries. Alternatively, you can increase the `max_determinized_states` setting in the Elasticsearch configuration, but be cautious as this may consume more memory and CPU resources.

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 ” The set of patterns [{}] is too complex to evaluate ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “The set of patterns [{}] is too complex to evaluate” class name is StringMatcher.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 LOGGER.debug("Pattern automaton [{}] is too complex"; patterns);
 String description = Strings.collectionToCommaDelimitedString(patterns);
 if (description.length() > 80) {
 description = Strings.cleanTruncate(description; 80) + "...";
 }
 throw new ElasticsearchSecurityException("The set of patterns [{}] is too complex to evaluate"; e; description);
 }
 }
 }
}

 

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?