Message read past expected size request for and action resetting – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 1.3-1.3

Briefly, this error occurs when Elasticsearch receives a message that exceeds the expected size limit. This could be due to a large query or document being sent to Elasticsearch. To resolve this issue, you can try reducing the size of the data being sent, increasing the http.max_content_length setting in the Elasticsearch configuration, or optimizing your queries to retrieve less data at once. Also, ensure that your client is correctly configured to handle large responses.

This guide will help you check for common problems that cause the log ” Message read past expected size (request) for [{}] and action [{}]; resetting ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: handler and netty.

Log Context

Log “Message read past expected size (request) for [{}] and action [{}]; resetting” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

             String action = handleRequest(ctx.getChannel(); wrappedStream; requestId; version);
            if (buffer.readerIndex() != expectedIndexReader) {
                if (buffer.readerIndex() 


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