+ propName + must not have a null value – 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 ” + propName + must not have a null value ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index.

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 “[” + propName + “] must not have a [null] value”classname  is TypeParsers.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

if (false == propName.equals("null_value") && propNode == null) {
 * No properties *except* null_value are allowed to have null. So we catch it here and tell the user something useful rather
 * than send them a null pointer exception later.
 throw new MapperParsingException("[" + propName + "] must not have a [null] value");
 * Parse the {@code meta} key of the mapping.


Watch product tour

Watch how AutoOps finds & fixes Elasticsearch problems

Analyze Your Cluster
Skip to content