Failed to delete index () ES log v2.3 – How to solve related issues

Opster Team

Feb-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you run Elasticsearch Error 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 delete index () ES log v2.3 ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: cluster, delete, index 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 “failed to delete index ({})” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

    private void deleteIndex(String index; String reason) {
        try {
            indicesService.deleteIndex(index; reason);
        } catch (Throwable e) {
            logger.warn("failed to delete index ({})"; e; reason);


    private void failAndRemoveShard(ShardRouting shardRouting; IndexService indexService; boolean sendShardFailure; String message; 
Nullable Throwable failure) {


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