Truncated date math – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch encounters an incomplete or improperly formatted date math expression. Date math expressions are used to calculate dates based on the current time. If the expression is incomplete or incorrectly formatted, Elasticsearch cannot interpret it, resulting in this error. To resolve this issue, ensure that your date math expressions are correctly formatted and complete. For example, instead of “now-1”, use “now-1d” to subtract one day from the current date. Also, ensure that the date field you’re using supports date math expressions.

This guide will help you check for common problems that cause the log ” truncated date math [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: .

Log Context

Log “truncated date math [{}]” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 throw new ElasticsearchParseException("operator not supported for date math [{}]"; mathString);
 }  if (i >= mathString.length()) {
 throw new ElasticsearchParseException("truncated date math [{}]"; mathString);
 }  final int num;
 if (Character.isDigit(mathString.charAt(i)) == false) {
 num = 1;


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