Failed to clean index () – 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 clean index () ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: cluster, 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 clean index ({})” classname is IndicesClusterStateService.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

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

    }

    private void deleteIndex(String index; String reason) {




 

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