Post listener failed – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 1.7-1.7

Briefly, this error occurs when Elasticsearch encounters an issue while trying to execute a post operation listener. This could be due to a variety of reasons such as network issues, insufficient resources, or a bug in the code. To resolve this issue, you can try the following: 1) Check the network connectivity and ensure that the Elasticsearch cluster is accessible. 2) Monitor the resource usage of your Elasticsearch cluster and scale it up if necessary. 3) Review the code for any potential bugs or issues, especially around the post operation listener.

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

Log Context

Log “post listener [{}] failed” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

     public void postCreateUnderLock(Engine.Create create) {
        for (IndexingOperationListener listener : listeners) {
            try {
            } catch (Exception e) {
                logger.warn("post listener [{}] failed"; e; listener);

    public void throttlingActivated() {


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