Prepare target for translog failed – How to solve this Elasticsearch error

Opster Team

July-20, 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 ” prepare target for translog failed ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: recovery and indices.

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 “prepare target for translog failed”classname  is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 final TimeValue tookTime = stopWatch.totalTime();
 logger.trace("recovery [phase1]: remote engine start took [{}]"; tookTime);
 e -> listener.onFailure(new RecoveryEngineException(shard.shardId(); 1; "prepare target for translog failed"; e)));
 // Send a request preparing the new shard's translog to receive operations. This ensures the shard engine is started and disables
 // garbage collection (not the JVM's GC!) of tombstone deletes.
 logger.trace("recovery [phase1]: prepare remote engine for translog");
 recoveryTarget.prepareForTranslogOperations(totalTranslogOps; wrappedListener);


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