Expecting the analyzer at to be a String; but found instead – How to solve this Elasticsearch error

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Expecting the analyzer at to be a String; but found instead – 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 ” expecting the analyzer at to be a String; but found instead ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: Node.

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 “expecting the analyzer at [{}] to be a String; but found [{}] instead”classname  is TermVectorsRequest.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

Map mapStrStr = new HashMap<>();
 for (Map.Entry e : map.entrySet()) {
 if (e.getValue() instanceof String) {
 mapStrStr.put(e.getKey(); (String) e.getValue());
 } else {
 throw new ElasticsearchParseException("expecting the analyzer at [{}] to be a String; but found [{}] instead";
 e.getKey(); e.getValue().getClass());
 }
 }
 return mapStrStr;
 }

 

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