Log Unknown response type ; expected NodeSnapshotStatus or FailedNodeException – How To Solve Related Issues



Log Unknown response type ; expected NodeSnapshotStatus or FailedNodeException – How To Solve Related Issues

Opster Team

Feb-20, Version: 1.7-8.0

 

Before you read this guide, we recommend you run the Elasticsearch Error Check-Up which detects issues in ES that cause log errors. It’s a free tool that requires no installation and takes 2 minutes to complete.

This guide will help you check for common problems that cause the log ” Unknown response type ; expected NodeSnapshotStatus or FailedNodeException ” to appear. It’s important to understand the issues related to the log, so to get started, read the general overview on common issues and tips related to the Elasticsearch concepts: admin, cluster, node, response and snapshot.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up which analyses ES to pinpoint the cause of many errors and provides suitable actionable recommendations how to resolve them. Among the dozens of checks included are: shards sizes, thread pools, management queue size, search errors, circuit breakers and many more (join over 700 users who use this free tool).

Log Context

Log “unknown response type [{}]; expected NodeSnapshotStatus or FailedNodeException” classname is TransportNodesSnapshotsStatus.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

             if (resp instanceof NodeSnapshotStatus) { // will also filter out null response for unallocated ones
                nodesList.add((NodeSnapshotStatus) resp);
            } else if (resp instanceof FailedNodeException) {
                failures.add((FailedNodeException) resp);
            } else {
                logger.warn("unknown response type [{}]; expected NodeSnapshotStatus or FailedNodeException"; resp);
            }
        }
        return new NodesSnapshotStatus(clusterName; nodesList.toArray(new NodeSnapshotStatus[nodesList.size()]);
                failures.toArray(new FailedNodeException[failures.size()]));
    }






Related issues to this log

We have gathered selected Q&A from the community and issues from Github, that can help fix related issues please review the following for further information :






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