Timeout request – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

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Briefly, this error occurs when a request to Elasticsearch takes longer than the set timeout period. This could be due to heavy load, insufficient resources, or network issues. To resolve this, you can increase the timeout value, optimize your queries for better performance, or scale your Elasticsearch cluster to handle more load. Additionally, check your network for any issues that might be causing delays.

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This guide will help you check for common problems that cause the log ” {} Timeout: [{}]; request: [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: replication.

Log Context

Log “{} Timeout: [{}]; request: [{}]” class name is TransportReplicationAction.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 assert false : "finishOnSuccess called but operation is already finished";
 }  void retryBecauseUnavailable(ShardId shardId; String message) {
 retry(new UnavailableShardsException(shardId; "{} Timeout: [{}]; request: [{}]"; message; request.timeout(); request));
 }  /**
 * Executes the logic for acquiring one or more operation permit on a primary shard. The default is to acquire a single permit but this


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