Failed to parse percentage significance heuristic expected an empty object but got instead – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-6.8

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Briefly, this error occurs when Elasticsearch is unable to parse the significance heuristic for the field ‘percentage’. It expects an empty object, but it received a non-empty object instead. To resolve this issue, you can check the query and ensure that the ‘percentage’ field is not being populated with an object. If it is, you should remove the object or replace it with an empty one. Alternatively, you could modify the Elasticsearch mapping to accept non-empty objects for the ‘percentage’ field.

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This guide will help you check for common problems that cause the log ” failed to parse [percentage] significance heuristic. expected an empty object; but got [{}] instead ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: aggregations, search.

Log Context

Log “failed to parse [percentage] significance heuristic. expected an empty object; but got [{}] instead” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 public static SignificanceHeuristic parse(XContentParser parser)
 throws IOException; QueryShardException {
 // move to the closing bracket
 if (!parser.nextToken().equals(XContentParser.Token.END_OBJECT)) {
 throw new ElasticsearchParseException("failed to parse [percentage] significance heuristic. expected an empty object; but got [{}] instead"; parser.currentToken());
 return new PercentageScore();
 }  /**


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