Failed to list dangling indices – How to solve related issues

Opster Team

Jan-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you run Elasticsearch Error Check-Up which analyzes 2 JSON files to detect many errors.

To easily locate the root cause and resolve this issue try AutoOps for Elasticsearch & OpenSearch. It diagnoses problems by analyzing hundreds of metrics collected by a lightweight agent and offers guidance for resolving them.

This guide will help you check for common problems that cause the log ” Failed to list dangling indices ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: dangling and indices.

Log Context

Log “Failed to list dangling indices” classname is DanglingIndicesState.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                     newIndices.put(indexMetaData.getIndex(); indexMetaData);
                }
            }
            return newIndices;
        } catch (IOException e) {
            logger.warn("failed to list dangling indices"; e);
            return emptyMap();
        }
    }

    /**




 

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