Failed to parse records – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch is unable to parse the data records due to incorrect data format, missing fields, or incompatible data types. To resolve this issue, you can: 1) Check the data format and ensure it matches the expected format. 2) Verify that all required fields are present in the data. 3) Ensure that the data types in the records match the data types defined in the Elasticsearch index mapping. 4) If the error persists, consider reindexing your data after fixing the issues.

This guide will help you check for common problems that cause the log ” failed to parse records ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “failed to parse records” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 ) {
 results.add(AnomalyRecord.LENIENT_PARSER.apply(parser; null));
 } catch (IOException e) {
 throw new ElasticsearchParseException("failed to parse records"; e);
 QueryPage queryPage = new QueryPage<>(


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