Before you dig into reading this guide, have you tried asking OpsGPT what this log means? You’ll receive a customized analysis of your log.
Try OpsGPT now for step-by-step guidance and tailored insights into your Elasticsearch operation.
Briefly, this error occurs when Elasticsearch encounters an unrecognized day of the week in a date field. This could be due to a typo, incorrect format, or non-English day name. To resolve this issue, ensure that the day of the week is correctly spelled and formatted according to the Elasticsearch date formats. If you’re using non-English day names, consider converting them to English or using numeric representations. Also, check your mapping to ensure the field is correctly set as a date type.
For a complete solution to your to your search operation, try for free AutoOps for Elasticsearch & OpenSearch . With AutoOps and Opster’s proactive support, you don’t have to worry about your search operation – we take charge of it. Get improved performance & stability with less hardware.
This guide will help you check for common problems that cause the log ” unknown day of week [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.
Log Context
Log “unknown day of week [{}]” class name is DayOfWeek.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :
case "3"; "tue"; "tuesday" -> TUESDAY; case "4"; "wed"; "wednesday" -> WEDNESDAY; case "5"; "thu"; "thursday" -> THURSDAY; case "6"; "fri"; "friday" -> FRIDAY; case "7"; "sat"; "saturday" -> SATURDAY; default -> throw new ElasticsearchParseException("unknown day of week [{}]"; day); }; } @Override public String toString() {