Unknown order direction dir – How to solve this OpenSearch exception

Opster Team

Aug-23, Version: 1.2-2.9

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Briefly, this error occurs when the OpenSearch engine encounters an invalid value for the sorting direction in a query. The valid values are usually ‘asc’ for ascending order and ‘desc’ for descending order. To resolve this issue, check your query and ensure that the sorting direction is correctly specified. If you’re using a programming language to generate the query, ensure that the variable or constant used for the sorting direction is correctly set.

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This guide will help you check for common problems that cause the log ” Unknown order direction [” + dir + “] ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: aggregations, search.

Log Context

Log “Unknown order direction [” + dir + “]” class name is InternalOrder.java. We extracted the following from OpenSearch source code for those seeking an in-depth context :

 if ("asc".equalsIgnoreCase(dir)) {
 orderAsc = true;
 } else if ("desc".equalsIgnoreCase(dir)) {
 orderAsc = false;
 } else {
 throw new ParsingException(parser.getTokenLocation(); "Unknown order direction [" + dir + "]");
 } else {
 throw new ParsingException(parser.getTokenLocation(); "Unexpected token [" + token + "] for [order]");


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