Log Failed to disconnect to node – How To Solve Related Issues

Log Failed to disconnect to node – How To Solve Related Issues

Updated: Jan-20

Elasticsearch Version: 1.7-8.0

Background

To resolve issues causing many log errors you can try our Elasticsearch Check-Up it analyses ES configuration to provide actionable recommendations (no installation required) 


To troubleshoot log “Failed to disconnect to node” it’s important to understand a few problems related to Elasticsearch concepts cluster, node. See bellow important tips and explanations on these concepts

Log Context

Log”Failed to disconnect to node [{}]” classname is NodeConnectionsService.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                 Integer current = nodes.remove(node);
                assert current != null : "node " + node + " was removed in event but not in internal nodes";
                try {
                    transportService.disconnectFromNode(node);
                } catch (Exception e) {
                    logger.warn(() -> new ParameterizedMessage("failed to disconnect to node [{}]"; node); e);
                }
            }
        }
    }





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 :

1 Possible Causes For Transport Disco  

Frequent Disconnects Between Nodes  

 

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