Failed to parse date field with format – 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 ” failed to parse date field with format ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: Node.

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 “failed to parse date field [{}] with format [{}]”classname  is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

} else if (end != value.length()) {
 throw new IllegalArgumentException("Unrecognized chars at the end of [" + value + "]: [" + value.substring(end) + "]");
 return date.getMillis();
 } catch (IllegalArgumentException e) {
 throw new ElasticsearchParseException("failed to parse date field [{}] with format [{}]"; e; value;


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