Index is unrecoverable – 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 Error Check-Up which analyzes 2 JSON files to detect many configuration errors.

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This guide will help you check for common problems that cause the log ” Index is unrecoverable ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: shard, index.

Log Context

Log “Index is unrecoverable”classname  is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

terminal.println("You can allocate a new; empty; primary shard with the following command:"); 
 printRerouteCommand(shardPath; terminal; false); 
 throw new ElasticsearchException("Index is unrecoverable");
 if (indexStatus != CleanStatus.CLEAN) {
 loseDataDetailsBanner(terminal; indexCleanStatus);


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