Unknown date time unit id ” + id + ” – How to solve this Elasticsearch error

Opster Team

March-22, 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 ” Unknown date time unit id ” + id + ” ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: cluster.

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 “Unknown date time unit id [” + id + “]”classname  is Rounding.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

case 4 -> MONTH_OF_YEAR;
 case 5 -> DAY_OF_MONTH;
 case 6 -> HOUR_OF_DAY;
 case 7 -> MINUTES_OF_HOUR;
 case 8 -> SECOND_OF_MINUTE;
 default -> throw new ElasticsearchException("Unknown date time unit id [" + id + "]");
 public abstract void innerWriteTo(StreamOutput out) throws IOException;


Try AutoOps to detect and fix issues in your cluster:

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