Failed to acquire connection – How to solve this Elasticsearch error

Opster Team

March-22, Version: 1.7-8.0

Before you begin reading this guide, we recommend you try running the Elasticsearch Check-Up which can resolve issues that cause many errors.

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

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.

Log Context

Log “failed to acquire connection”classname  is JoinHelper.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

public void onFailure(Exception e) {
 pendingOutgoingJoins.remove(dedupKey);
 FailedJoinAttempt attempt = new FailedJoinAttempt(
 destination;
 joinRequest;
 new ConnectTransportException(destination; "failed to acquire connection"; e)
 );
 attempt.logNow();
 lastFailedJoinAttempt.set(attempt);
 }
 });

 

Try AutoOps to detect and fix issues in your cluster:

Analyze Your Cluster

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