PostCreateUnderLock listener failed – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 2.3-2.3

Briefly, this error occurs when Elasticsearch encounters an issue while executing a PostCreateUnderLock listener, which is a callback function that runs after a resource is created under a lock. 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 code to identify and fix any potential bugs. Additionally, checking the Elasticsearch logs for more detailed error messages could help pinpoint the exact cause of the issue.

This guide will help you check for common problems that cause the log ” postCreateUnderLock 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 “postCreateUnderLock 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("postCreateUnderLock listener [{}] failed"; e; listener);

    public void throttlingActivated() {


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