Timeout waiting for ; request: – How to solve this Elasticsearch error

Timeout waiting for ; request: – How to solve this Elasticsearch error

Opster Team

July-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you try running the Elasticsearch Error Check-Up which can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” Timeout waiting for ; request: ” to appear. It’s important to understand the issues related to the log, so to get started, read the general overview on common issues and tips related to the Elasticsearch concepts: ,,, and.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up which analyses ES to pinpoint the cause of many errors and provides suitable actionable recommendations how to resolve them (free tool that requires no installation).

Log Context

Log”Timeout waiting for [{}]; request: {}”classname  is TransportInstanceSingleOperationAction.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

if (observer.isTimedOut()) {
  // we running as a last attempt after a timeout has happened. don't retry
  Exception listenFailure = failure;
  if (listenFailure == null) {
  if (shardIt == null) {
  listenFailure = new UnavailableShardsException(request.concreteIndex(); -1; "Timeout waiting for [{}]; request: {}";
  request.timeout(); actionName);
  } else {
  listenFailure = new UnavailableShardsException(shardIt.shardId();
  "[{}] shardIt; [{}] active : Timeout waiting for [{}]; request: {}"; shardIt.size(); shardIt.sizeActive();
  request.timeout(); actionName);


Run the Check-Up to get a customized report like this:

Analyze your cluster