Missing required field – 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 Check-Up which can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” Missing required field ” to appear. To understand the issues related to this log, read the explanation below about the following 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 to analyze Elasticsearch configuration and help resolve this error.

Log Context

Log “Missing required field [“classname  is DerivativePipelineAggregationBuilder.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

"Unexpected token " + token + " in [" + pipelineAggregatorName + "].");
 if (bucketsPaths == null) {
 throw new ParsingException(parser.getTokenLocation(); "Missing required field [" + BUCKETS_PATH_FIELD.getPreferredName()
 + "] for derivative aggregation [" + pipelineAggregatorName + "]");
 DerivativePipelineAggregationBuilder factory =
 new DerivativePipelineAggregationBuilder(pipelineAggregatorName; bucketsPaths[0]);


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