Failed to deserialize response from – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.1-8.2

Before you dig into reading this guide, have you tried asking OpsGPT what this log means? You’ll receive a customized analysis of your log.

Try OpsGPT now for step-by-step guidance and tailored insights into your Elasticsearch operation.

Briefly, this error occurs when Elasticsearch is unable to convert the response from a handler (like a plugin or module) back into a usable format. This could be due to a mismatch in versions, corrupted data, or a bug in the handler. To resolve this issue, you can try updating or reinstalling the handler, checking for data corruption, or debugging the handler to find and fix any potential bugs.

For a complete solution to your to your search operation, try for free AutoOps for Elasticsearch & OpenSearch . With AutoOps and Opster’s proactive support, you don’t have to worry about your search operation – we take charge of it. Get improved performance & stability with less hardware.

This guide will help you check for common problems that cause the log ” Failed to deserialize response from [{}] ” 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 response from [{}]” classname is InboundHandler.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

        } catch (Exception e) {
            final TransportException serializationException = new TransportSerializationException(
                "Failed to deserialize response from handler [" + handler + "]";
                e
            );
            logger.warn(new ParameterizedMessage("Failed to deserialize response from [{}]"; remoteAddress); serializationException);
            assert ignoreDeserializationErrors : e;
            handleException(handler; serializationException);
            return;
        }
        final String executor = handler.executor();

 

How helpful was this guide?

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?