Unexpected exception while waiting for http server to close – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 8.9-8.9

Briefly, this error occurs when Elasticsearch encounters an unexpected issue while trying to close an HTTP server. This could be due to a network issue, a server overload, or a problem with the Elasticsearch instance itself. To resolve this issue, you could try restarting the Elasticsearch instance, checking the server’s network connection, or reducing the server load. If the problem persists, you may need to investigate the Elasticsearch logs for more detailed information about the error.

This guide will help you check for common problems that cause the log ” unexpected exception while waiting for http server to close ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: node.

Log Context

Log “unexpected exception while waiting for http server to close” classname is Node.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :


        try {
        } catch (Exception e) {
            logger.warn("unexpected exception while waiting for http server to close"; e);

     * Wait for this node to be effectively closed.


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