Response channel request getHttpChannel closed – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.12-8.9

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Briefly, this error occurs when the HTTP channel through which Elasticsearch communicates with the client gets closed unexpectedly. This could be due to network issues, client-side problems, or server-side issues. To resolve this, you can try the following: 1) Check the network connection between the client and the server. 2) Verify if the client is closing the connection prematurely. 3) Inspect the server logs to identify any server-side issues. 4) Increase the server’s timeout settings if the request is taking too long to process.

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This guide will help you check for common problems that cause the log ” response channel [” + request.getHttpChannel() + “] closed ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: response, rest, request.

Log Context

Log “response channel [” + request.getHttpChannel() + “] closed” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 cancelClient.admin().indices().segments(indicesSegmentsRequest; new RestResponseListener(channel) {
 public RestResponse buildResponse(final IndicesSegmentResponse indicesSegmentResponse) throws Exception {
 if (request.getHttpChannel().isOpen() == false) {
 throw new TaskCancelledException("response channel [" + request.getHttpChannel() + "] closed");
 final Map indicesSegments = indicesSegmentResponse.getIndices();
 Table tab = buildTable(request; clusterStateResponse; indicesSegments);
 return RestTable.buildResponse(tab; channel);


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