Incoming last accepted term – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7-7.15

Briefly, this error occurs when there is a discrepancy in the term numbers between the leader and the follower nodes in an Elasticsearch cluster. This can happen due to network issues, node failures, or incorrect configurations. To resolve this issue, you can try the following: 1) Check and fix any network connectivity issues. 2) Ensure all nodes are running the same version of Elasticsearch. 3) Check the cluster’s health and restart any failed nodes. 4) Review and correct any misconfigurations in your Elasticsearch settings.

This guide will help you check for common problems that cause the log ” incoming last accepted term ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: cluster.

Log Context

Log “incoming last accepted term” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 final long lastAcceptedTerm = getLastAcceptedTerm();
 if (join.getLastAcceptedTerm() > lastAcceptedTerm) {
 logger.debug("handleJoin: ignored join as joiner has a better last accepted term (expected: <=[{}]; actual: [{}])";
 lastAcceptedTerm; join.getLastAcceptedTerm());
 throw new CoordinationStateRejectedException("incoming last accepted term " + join.getLastAcceptedTerm() +
 " of join higher than current last accepted term " + lastAcceptedTerm);
 }  if (join.getLastAcceptedTerm() == lastAcceptedTerm && join.getLastAcceptedVersion() > getLastAcceptedVersionOrMetadataVersion()) {