Failed to query node failure nodeId – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when the OpenSearch cluster fails to communicate with a specific node identified by nodeId(). This could be due to network issues, node failure, or the node being overwhelmed with requests. To resolve this, you can try the following: 1) Check the network connectivity between the nodes. 2) Verify the status of the node and restart it if necessary. 3) Monitor the load on the node and adjust the cluster settings to distribute the load more evenly. 4) Check the node logs for any specific errors and address them.

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This guide will help you check for common problems that cause the log ” Failed to query node [” + failure.nodeId() + “] ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: delete, query, indices, node, admin, dangling.

Log Context

Log “Failed to query node [” + failure.nodeId() + “]” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

                        OpenSearchException e = new OpenSearchException("Failed to query nodes [" + nodeIds + "]");

                        for (FailedNodeException failure : response.failures()) {
                            logger.error("Failed to query node [" + failure.nodeId() + "]"; failure);



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