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

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 can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” Aggregation ” + name + ” cannot support regular expression style ” to appear. It’s important to understand the issues related to the log, so to get started, read the general overview on common issues and tips related to the Elasticsearch concepts: search and aggregations.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up which analyses ES to pinpoint the cause of many errors and provides suitable actionable recommendations how to resolve them (free tool that requires no installation).

Log Context

Log”Aggregation [” + name + “] cannot support regular expression style”classname  is TermsAggregatorFactory.java 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

Run the Check-Up to get a customized report like this:

check-up-dashboard illustration

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