Log Found dangled index on node . This index cannot be – How To Solve Related Issues


Log Found dangled index on node . This index cannot be – How To Solve Related Issues

Opster Team

Jan-20, Version: 1.7-8.0

 

Before you begin reading this guide, we recommend you try running the 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 ” Found dangled index on node . This index cannot be ” to appear. It’s important to understand the issues related to the log, so to get started, read the general overview on common issues and tips related to the Elasticsearch concepts: dangled, index, indices and node.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up which analyses ES to pinpoint the cause of many errors and provides suitable actionable recommendations how to resolve them (free tool that requires no installation).

Log context

Log “Found dangled index [{}] on node [{}]. This index cannot be” classname is LocalAllocateDangledIndices.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                             // with the current version and upgrade it if needed.
                            upgradedIndexMetaData = metaDataIndexUpgradeService.upgradeIndexMetaData(indexMetaData;
                                minIndexCompatibilityVersion);
                        } catch (Exception ex) {
                            // upgrade failed - adding index as closed
                            logger.warn(() -> new ParameterizedMessage("found dangled index [{}] on node [{}]. This index cannot be " +
                                "upgraded to the latest version; adding as closed"; indexMetaData.getIndex(); request.fromNode); ex);
                            upgradedIndexMetaData = IndexMetaData.builder(indexMetaData).state(IndexMetaData.State.CLOSE)
                                .version(indexMetaData.getVersion() + 1).build();
                        }
                        metaData.put(upgradedIndexMetaData; false);




 

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