Briefly, this error occurs when Elasticsearch is unable to parse a date field due to an incorrect or incompatible date format. This could be because the date format in the data doesn’t match the format specified in the mapping or during a query. To resolve this, ensure that the date format in your data matches the format specified in your Elasticsearch mapping. Alternatively, you can use the “date_optional_time” format which supports most date/time formats. If the error occurs during a query, make sure the date format in the query matches the one in the mapping.
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: .
Log Context
Log “failed to parse date field [{}] with format [{}]” class name is JodaDateMathParser.java. 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;
dateTimeFormatter.pattern());
}
} }
