Log Could not find a readable index-N file in a non-empty shard snapshot directory – How To Solve Related Issues



Log Could not find a readable index-N file in a non-empty shard snapshot directory – 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 causing many log errors (free and no installation required)

 

This guide will help you check for common problems that cause the log “Could not find a readable index-N file in a non-empty shard snapshot directory” 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: blobstore, discovery-file, repositories, repository-azure, shard, snapshot.


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 discover the cause of many errors and provides suitable actionable recommendations. 

Log Context

Log”Could not find a readable index-N file in a non-empty shard snapshot directory [{}]” classname is BlobStoreRepository.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                 } catch (IOException e) {
                    final String file = SNAPSHOT_INDEX_PREFIX + latest;
                    logger.warn(() -> new ParameterizedMessage("failed to read index file [{}]"; file); e);
                }
            } else if (blobKeys.isEmpty() == false) {
                logger.warn("Could not find a readable index-N file in a non-empty shard snapshot directory [{}]"; blobContainer.path());
            }

            // We couldn't load the index file - falling back to loading individual snapshots
            List snapshots = new ArrayList();
            for (String name : blobKeys) {




 

Related issues to this log

We have gathered selected Q&A from the community and issues from Github, that can help fix related issues please review the following for further information :

1 List all indexes on ElasticSearch server? -views 187.66 K ,score 212

Dule Not Found Redux  

 

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