Exception thrown by listener while notifying on all nodes acked – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.9

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Briefly, this error occurs when a listener, which is responsible for handling responses from Elasticsearch nodes, encounters an exception during the process of acknowledging all nodes. This could be due to network issues, node failures, or a bug in the listener code. To resolve this issue, you can try the following: 1) Check the network connectivity between the nodes; 2) Verify the health status of all nodes; 3) Review the listener code for any potential bugs or exceptions not being handled properly; 4) Check the Elasticsearch logs for more detailed error information.

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This guide will help you check for common problems that cause the log ” exception thrown by listener while notifying on all nodes acked ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: cluster.

Log Context

Log “exception thrown by listener while notifying on all nodes acked” classname is MasterService.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

        public void onAckSuccess() {
            try (ThreadContext.StoredContext ignore = context.get()) {
            } catch (Exception inner) {
                logger.error("exception thrown by listener while notifying on all nodes acked"; inner);

        public void onAckFailure(@Nullable Exception e) {
            try (ThreadContext.StoredContext ignore = context.get()) {


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