Error parsing null value on field name – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.1-8.9

Briefly, this error occurs when Elasticsearch tries to parse a null value for a field that doesn’t allow null values. This can happen if your data contains null values for fields that are not configured to accept them. To resolve this issue, you can either remove null values from your data before indexing, or modify your index mapping to allow null values for the specific field. Alternatively, you can use the “ignore_malformed” option to ignore such errors during indexing.

This guide will help you check for common problems that cause the log ” Error parsing [null_value] on field [” + name() + “]: ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index.

Log Context

Log “Error parsing [null_value] on field [” + name() + “]: ” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 try {
 return fieldType.parse(nullValue.getValue());
 } catch (Exception e) {
 if (indexCreatedVersion.onOrAfter(IndexVersion.V_8_0_0)) {
 throw new MapperParsingException("Error parsing [null_value] on field [" + name() + "]: " + e.getMessage(); e);
 } else {
 "Error parsing ["


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