Failed to execute failure callback on failure – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 2.3-2.3

Briefly, this error occurs when Elasticsearch fails to execute a failure callback, which is a function that should run when an operation fails. This could be due to a variety of reasons such as network issues, node failures, or bugs in the code. To resolve this issue, you can try the following: 1) Check the network connectivity and ensure all nodes are reachable. 2) Inspect the Elasticsearch logs for more detailed error messages. 3) Review the code for any potential bugs or issues. 4) If the problem persists, consider upgrading Elasticsearch to the latest version as it may contain bug fixes.

This guide will help you check for common problems that cause the log ” failed to execute failure callback on [{}]; failure [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: Index and Memory.

Log Context

Log “failed to execute failure callback on [{}]; failure [{}]” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :


            public void onFailure(Throwable t) {
                logger.warn("failed to execute failure callback on [{}]; failure [{}]"; t; listener; e);


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