Failed to retrieve shard stats from node – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.12-7.15

Briefly, this error occurs when Elasticsearch is unable to gather statistics about the shards from a specific node. This could be due to network issues, node failure, or the node being overwhelmed with requests. To resolve this, you can try restarting the node, checking the network connection, or reducing the load on the node by redistributing the shards or increasing the node’s resources. If the issue persists, consider checking the Elasticsearch logs for more detailed error information.

This guide will help you check for common problems that cause the log ” failed to retrieve shard stats from node [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: cluster, shard, node.

Log Context

Log “failed to retrieve shard stats from node [{}]” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                        for (final DefaultShardOperationFailedException shardFailure : indicesStatsResponse.getShardFailures()) {
                            if (shardFailure.getCause() instanceof FailedNodeException) {
                                final FailedNodeException failedNodeException = (FailedNodeException) shardFailure.getCause();
                                if (failedNodeIds.add(failedNodeException.nodeId())) {
                                    if (logger.isDebugEnabled()) {
                                        logger.warn(new ParameterizedMessage("failed to retrieve shard stats from node [{}]";
                                                failedNodeException.nodeId()); failedNodeException);
                                    } else {
                                        logger.warn("failed to retrieve shard stats from node [{}]: {}";
                                                failedNodeException.nodeId(); failedNodeException.getCause().getMessage());


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