Request was not completed successfully – How to solve this OpenSearch exception

Opster Team

Aug-23, Version: 2.5-2.9

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Briefly, this error occurs when OpenSearch is unable to process a request due to various reasons such as network issues, incorrect query syntax, or server overload. To resolve this, you can check the network connection and ensure the server is not overloaded. If the issue persists, review the query syntax for any errors. Additionally, check the OpenSearch logs for more detailed error information. If the problem is related to server resources, consider scaling up your OpenSearch cluster or optimizing your queries to reduce the load.

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This guide will help you check for common problems that cause the log ” Request was not completed successfully ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: request.

Log Context

Log “Request was not completed successfully” class name is We extracted the following from OpenSearch source code for those seeking an in-depth context :

 public void handleResponse(AcknowledgedResponse response) {"response {}"; response.getStatus());
 if (!response.getStatus()) {
 handleException(new TransportException("Request was not completed successfully"));
 }  @Override
 public void handleException(TransportException exp) {


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