Setting must be greater than zero – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.16-8.9

Briefly, this error occurs when a setting in Elasticsearch is assigned a value of zero or less, but the system requires a value greater than zero. This could be related to various settings like thread pool size, shard count, or memory allocation. To resolve this, you need to identify the setting mentioned in the error message and adjust its value to be greater than zero. Ensure that the new value is appropriate for your system’s resources and doesn’t lead to performance issues.

This guide will help you check for common problems that cause the log ” setting [{}] must be greater than zero ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “setting [{}] must be greater than zero” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 }  private static Setting.Validator getPositivePageSizeAlignedByteSizeValueValidator(String settingName) {
 return value -> {
 if (value.getBytes() <= 0L) {
 throw new SettingsException("setting [{}] must be greater than zero"; settingName);


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