Failed to parse term vectors request. field fields must be an array – How to solve this Elasticsearch error

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Failed to parse term vectors request. field fields must be an array – 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 ” failed to parse term vectors request. field fields must be an array ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: request.

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 “failed to parse term vectors request. field [fields] must be an array”classname  is TermVectorsRequest.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

if (token == XContentParser.Token.START_ARRAY) {
 while (parser.nextToken() != XContentParser.Token.END_ARRAY) {
 fields.add(parser.text());
 }
 } else {
 throw new ElasticsearchParseException("failed to parse term vectors request. field [fields] must be an array");
 }
 } else if (OFFSETS.match(currentFieldName; parser.getDeprecationHandler())) {
 termVectorsRequest.offsets(parser.booleanValue());
 } else if (POSITIONS.match(currentFieldName; parser.getDeprecationHandler())) {
 termVectorsRequest.positions(parser.booleanValue());

 

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