Failed to list shard for on node – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-7.15

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Briefly, this error occurs when Elasticsearch is unable to list the shards for a specific node. This could be due to a network issue, a node failure, or a problem with the cluster’s state. To resolve this issue, you can try restarting the node, checking the network connectivity, or restoring the cluster from a backup. If the problem persists, you may need to reindex your data or increase the cluster’s capacity.

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

Log Context

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

                        if (unwrappedCause instanceof EsRejectedExecutionException ||
                            unwrappedCause instanceof ReceiveTimeoutTransportException ||
                            unwrappedCause instanceof ElasticsearchTimeoutException) {
                            nodeEntry.restartFetching();
                        } else {
                            logger.warn(() -> new ParameterizedMessage("{}: failed to list shard for {} on node [{}]";
                                shardId; type; failure.nodeId()); failure);
                            nodeEntry.doneFetching(failure.getCause());
                        }
                    }
                }

 

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