Higher term encountered encountered term > used outdated getTask term – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 8.2-8.9

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Briefly, this error occurs when Elasticsearch encounters a term that is higher than the one currently in use. This usually happens during a cluster state update, where a node receives an update from a term that is higher than its current term. To resolve this issue, you can try restarting the node, or if the problem persists, consider updating the cluster state manually. Also, ensure that all nodes in the cluster are running the same version of Elasticsearch to avoid compatibility issues.

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This guide will help you check for common problems that cause the log ” Higher term encountered (encountered: ” + term + ” > used: ” + outdated.getTask().term() + “) ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: cluster.

Log Context

Log “Higher term encountered (encountered: ” + term + ” > used: ” + outdated.getTask().term() + “)” class name is NodeJoinExecutor.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 var term = batchExecutionContext.taskContexts().stream().mapToLong(t -> t.getTask().term()).max().getAsLong();  var split = batchExecutionContext.taskContexts().stream().collect(Collectors.partitioningBy(t -> t.getTask().term() == term));
 for (TaskContext outdated : split.get(false)) {
 outdated.onFailure(
 new NotMasterException("Higher term encountered (encountered: " + term + " > used: " + outdated.getTask().term() + ")")
 );
 }  final var joinTaskContexts = split.get(true);
 final var initialState = batchExecutionContext.initialState();

 

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