Failed to invoke before index closed callback – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 2.3-2.3

Briefly, this error occurs when Elasticsearch tries to execute a callback function before closing an index, but fails due to issues like insufficient resources, network problems, or bugs in the code. To resolve this, you can try increasing system resources, checking network connectivity, or debugging the callback function to identify and fix any coding issues. Additionally, ensure that your Elasticsearch version is up-to-date as this could be a bug that has been fixed in a newer version.

This guide will help you check for common problems that cause the log ” [{}] failed to invoke before index closed callback ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index and indices.

Log Context

Log “[{}] failed to invoke before index closed callback” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

     public void beforeIndexClosed(IndexService indexService) {
        for (Listener listener : listeners) {
            try {
            } catch (Throwable t) {
                logger.warn("[{}] failed to invoke before index closed callback"; t; indexService.index().name());
                throw t;


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