Failed to execute progress listener on fetch failure – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-1.1

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Briefly, this error occurs when OpenSearch fails to execute a progress listener due to a fetch failure. This could be due to network issues, resource constraints, or a problem with the listener itself. To resolve this issue, you can try the following: 1) Check your network connection and ensure it’s stable. 2) Verify that your system has enough resources (CPU, memory) to handle the task. 3) Review the progress listener’s code for any errors or issues. 4) If the problem persists, consider restarting the OpenSearch service.

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This guide will help you check for common problems that cause the log ” [{}] Failed to execute progress listener on fetch failure ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: search.

Log Context

Log “[{}] Failed to execute progress listener on fetch failure” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

    final void notifyFetchFailure(int shardIndex; SearchShardTarget shardTarget; Exception exc) {
        try {
            onFetchFailure(shardIndex; shardTarget; exc);
        } catch (Exception e) {
            logger.warn(() -> new ParameterizedMessage("[{}] Failed to execute progress listener on fetch failure";
                shards.get(shardIndex)); e);

    static List buildSearchShards(List extends SearchPhaseResult> results) {


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