Header cannot be overwritten via ” + fullSetting + ” – 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 ” header cannot be overwritten via ” + fullSetting + ” ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

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 “header cannot be overwritten via [” + fullSetting + “]”classname  is HttpExporter.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

settings -> {
 final Set names = settings.names();
 for (String name : names) {
 final String fullSetting = key + "." + name;
 if (HttpExporter.BLACKLISTED_HEADERS.contains(name)) {
 throw new SettingsException("header cannot be overwritten via [" + fullSetting + "]");
 }
 final List values = settings.getAsList(name);
 if (values.isEmpty()) {
 throw new SettingsException("headers must have values; missing for setting [" + fullSetting + "]");
 }

 

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