Briefly, this error occurs when Elasticsearch is unable to convert a serialized exception response back into an object. This could be due to a version mismatch between nodes, or corrupted data. To resolve this, ensure all nodes are running the same Elasticsearch version. If the problem persists, check for corrupted data by running a consistency check on your indices. If the error is still present, consider reindexing your data.
This guide will help you check for common problems that cause the log ” Failed to deserialize exception response from stream ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: response.
Log Context
Log “Failed to deserialize exception response from stream” class name is InboundHandler.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :
private void handlerResponseError(StreamInput stream; final TransportResponseHandler handler) {
Exception error;
try {
error = stream.readException();
} catch (Exception e) {
error = new TransportSerializationException("Failed to deserialize exception response from stream"; e);
}
handleException(handler; error);
} private void handleException(final TransportResponseHandler handler; Throwable error) {
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