Failed to call listener on global ordinals loading – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when OpenSearch fails to execute a listener callback during the loading of global ordinals, which are used for faster sorting and aggregations. This could be due to a variety of reasons such as insufficient resources, network issues, or a bug in the code. To resolve this issue, you could try increasing system resources, checking network connectivity, or debugging the listener code to identify and fix any potential issues. Additionally, ensure that your OpenSearch version is up-to-date as this could be a bug that has been fixed in a newer version.

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This guide will help you check for common problems that cause the log ” Failed to call listener on global ordinals loading ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: cache, fielddata, indices.

Log Context

Log “Failed to call listener on global ordinals loading” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

                for (Listener listener : k.listeners) {
                    try {
                        listener.onCache(shardId; fieldName; ifd);
                    } catch (Exception e) {
                        // load anyway since listeners should not throw exceptions
                        logger.error("Failed to call listener on global ordinals loading"; e);
                return ifd;
            return (IFD) accountable;


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