Failed to execute progress listener on list shards – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.6-8.9

Briefly, this error occurs when Elasticsearch is unable to execute a progress listener on list shards. This could be due to a network issue, a heavy load on the cluster, or a problem with the underlying storage system. To resolve this issue, you can try the following: 1) Check the network connectivity and stability. 2) Monitor the load on your Elasticsearch cluster and scale it up if necessary. 3) Inspect the health of your storage system and fix any issues. 4) Check the Elasticsearch logs for more detailed error messages that can help identify the problem.

This log is related to search problems, in addition to reading the guide below you can use the free Search Log Analyzer. With Opster’s Analyzer, you can easily locate slow searches and understand what led to them adding additional load to your system. The tool is free and takes just 2 minutes to run.

Log Context

Log “Failed to execute progress listener on list shards” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

    final void notifyListShards(List shards; List skippedShards; Clusters clusters; boolean fetchPhase) {
        this.shards = shards;
        try {
            onListShards(shards; skippedShards; clusters; fetchPhase);
        } catch (Exception e) {
            logger.warn("Failed to execute progress listener on list shards"; e);

    final void notifyQueryResult(int shardIndex) {
        try {


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