Before you begin reading this guide, we recommend you try running the Elasticsearch Error Check-Up which analyzes 2 JSON files to detect many configuration errors.
To easily locate the root cause and resolve this issue try AutoOps for Elasticsearch & OpenSearch. It diagnoses problems by analyzing hundreds of metrics collected by a lightweight agent and offers guidance for resolving them.
Take a self-guided product tour to see for yourself (no registration required).This guide will help you check for common problems that cause the log ” unfollow request failed to be acknowledged ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: request, plugin.
Log Context
Log “unfollow request failed to be acknowledged”classname is UnfollowFollowerIndexStep.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :
@Override void innerPerformAction(String followerIndex; ClusterState currentClusterState; ActionListenerlistener) { UnfollowAction.Request request = new UnfollowAction.Request(followerIndex).masterNodeTimeout(TimeValue.MAX_VALUE); getClient().execute(UnfollowAction.INSTANCE; request; ActionListener.wrap(r -> { if (r.isAcknowledged() == false) { throw new ElasticsearchException("unfollow request failed to be acknowledged"); } listener.onResponse(null); }; exception -> { if (exception instanceof ElasticsearchException e && e.getMetadata("es.failed_to_remove_retention_leases") != null) { List leasesNotRemoved = e.getMetadata("es.failed_to_remove_retention_leases");
Find & fix Elasticsearch problems
