Briefly, this error occurs when Elasticsearch receives a request that is not fully read or understood, possibly due to network issues or a client abruptly closing a connection. To resolve this, you can try the following: 1) Check your network connection and ensure it’s stable. 2) Verify that your client is not closing connections prematurely. 3) Ensure that your Elasticsearch version is compatible with your client’s version. 4) Check your Elasticsearch logs for more detailed error information. 5) If the error persists, consider increasing the timeout settings in your Elasticsearch configuration.
This guide will help you check for common problems that cause the log ” Message not fully read (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 not fully read (request) for [{}] and action [{}]; resetting” classname is MessageChannelHandler.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
if (TransportStatus.isRequest(status)) {
String action = handleRequest(ctx.getChannel(); wrappedStream; requestId; version);
if (buffer.readerIndex() != expectedIndexReader) {
if (buffer.readerIndex()
