Connection manager is closed – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.17-8.9

Before you dig into reading this guide, have you tried asking OpsGPT what this log means? You’ll receive a customized analysis of your log.

Try OpsGPT now for step-by-step guidance and tailored insights into your Elasticsearch operation.

Briefly, this error occurs when an attempt is made to perform an operation on Elasticsearch after the connection manager has been closed. This could be due to a programming error where the connection is closed before all operations are completed. To resolve this issue, ensure that the connection manager is not closed prematurely. Also, check the order of operations in your code to ensure that all necessary tasks are completed before closing the connection. Additionally, handle exceptions properly to prevent unexpected closure of the connection manager.

For a complete solution to your to your search operation, try for free AutoOps for Elasticsearch & OpenSearch . With AutoOps and Opster’s proactive support, you don’t have to worry about your search operation – we take charge of it. Get improved performance & stability with less hardware.

This guide will help you check for common problems that cause the log ” connection manager is closed ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: .

Log Context

Log “connection manager is closed” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 if (success == false) {;
 } else {
 listener.onFailure(new ConnectTransportException(node; "connection manager is closed"));
 }  /**
 * Connects to the given node; or acquires another reference to an existing connection to the given node if a connection already exists.


How helpful was this guide?

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?