No longer master. source: ” + source + ” – Elasticsearch Error How To Solve Related Issues



No longer master. source: ” + source + ” – 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 “no longer master. source: ” + source + “” 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: master, 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”no longer master. source: [” + source + “]”classname  is ClusterStateTaskListener.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

/**
  * called when the task was rejected because the local node is no longer master.
  * Used only for tasks submitted to {@link MasterService}.
  */
  default void onNoLongerMaster(String source) {
  onFailure(source; new NotMasterException("no longer master. source: [" + source + "]"));
  }
 
  /**
  * Called when the result of the {@link ClusterStateTaskExecutor#execute(ClusterState; List)} have been processed
  * properly by all listeners.

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 No cluster health with 2 nodes – Elasticsearch – Discuss the Elastic …  

No cluster health with 2 nodes – Elasticsearch – Discuss the Elastic …  



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