Rounding `/` can only be used on single unit types – 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 Error Check-Up which analyzes 2 JSON files to detect many configuration errors.

To easily locate the root cause and resolve this issue try AutoOps for Elasticsearch & OpenSearch. It diagnoses problems by analyzing hundreds of metrics collected by a lightweight agent and offers guidance for resolving them.

This guide will help you check for common problems that cause the log ” rounding `/` can only be used on single unit types ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: Node.

Log Context

Log “rounding `/` can only be used on single unit types [{}]”classname  is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 num = Integer.parseInt(mathString.substring(numFrom; i));
 if (round) {
 if (num != 1) {
 throw new ElasticsearchParseException("rounding `/` can only be used on single unit types [{}]"; mathString);
 char unit = mathString.charAt(i++);
 MutableDateTime.Property propertyToRound = null;
 switch (unit) {


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