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 MessageChannelHandler.java.
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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