Before you begin reading this guide, we recommend you run Elasticsearch Error Check-Up which analyzes 2 JSON files to detect many errors.
To easily locate the root cause and resolve this issue try AutoOps for Elasticsearch & OpenSearch. It diagnoses problems by analyzing hundreds of metrics collected by a lightweight agent and offers guidance for resolving them.
This guide will help you check for common problems that cause the log ” Failed to send response for get ” 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 send response for get” classname is TransportInstanceSingleOperationAction.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
public void onFailure(Exception e) { try { channel.sendResponse(e); } catch (Exception inner) { inner.addSuppressed(e); logger.warn("failed to send response for get"; inner); } } }); }