Aggregation ” + name + ” cannot support regular expression style – How to solve this Elasticsearch error

Opster Team

July-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you try running the Elasticsearch Error Check-Up which analyzes 2 JSON files to detect many configuration errors.

To easily locate the root cause and resolve this issue try AutoOps for Elasticsearch & OpenSearch. It diagnoses problems by analyzing hundreds of metrics collected by a lightweight agent and offers guidance for resolving them.

This guide will help you check for common problems that cause the log ” Aggregation ” + name + ” cannot support regular expression style ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: search and aggregations.

Log Context

Log “Aggregation [” + name + “] cannot support regular expression style”classname  is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

subAggCollectMode = pickSubAggColectMode(factories; bucketCountThresholds.getShardSize(); maxOrd);
 if ((includeExclude != null) && (includeExclude.isRegexBased()) && format != DocValueFormat.RAW) {
 // TODO this exception message is not really accurate for the string case. It's really disallowing regex + formatter
 throw new AggregationExecutionException("Aggregation [" + name + "] cannot support regular expression style "
 + "include/exclude settings as they can only be applied to string fields. Use an array of values for "
 + "include/exclude clauses");
 // TODO: [Zach] we might want refactor and remove ExecutionMode#create(); moving that logic outside the enum


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