Briefly, this error occurs when Elasticsearch tries to read a message that exceeds the expected size. This could be due to a large document or a bulk request exceeding the http.max_content_length limit. To resolve this issue, you can increase the http.max_content_length in the Elasticsearch configuration file. Alternatively, you can reduce the size of the document or split the bulk request into smaller parts. Also, ensure that your network connection is stable to avoid incomplete data transmission.
This guide will help you check for common problems that cause the log ” Message read past expected size (response) for [{}] handler {}; error [{}]; 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 (response) for [{}] handler {}; error [{}]; resetting” classname is MessageChannelHandler.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
}
if (buffer.readerIndex() != expectedIndexReader) {
if (buffer.readerIndex()
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