Delayed reroute ” + reason + ” cancelled – Elasticsearch Error How To Solve Related Issues

Delayed reroute ” + reason + ” cancelled – Elasticsearch Error How To Solve Related Issues

Updated: July-20

Elasticsearch 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 causing many errors 


This guide will help you check for common problems that cause the log “delayed reroute ” + reason + ” cancelled” 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: routing, cluster.

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 discover the cause of many errors and provides suitable actionable recommendations (free tool that requires no installation). 

Log Context

Log”delayed reroute [” + reason + “] cancelled”classname  is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

synchronized (mutex) {
  if (pendingRerouteListeners == currentListeners) {
  pendingRerouteListeners = null;
  ActionListener.onFailure(currentListeners; new NotMasterException("delayed reroute [" + reason + "] cancelled"));
  // no big deal; the new master will reroute again
  public void onFailure(String source; Exception e) {

Related issues to this log

We have gathered selected Q&A from the community and issues from Github, that can help fix related issues please review the following for further information :

1 elasticsearch – there is no copy of the shard available? -views 748 

No elasticsearch shard is assigned to newly added node -views   504,score 1

Find Configuration Errors

Analyze Now