found shard on path: with a different index UUID this shard seems to be leftover from a different index with the same name. Remove the leftover shard in order to reuse the path with the current 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 ” found shard on path: with a different index UUID this shard seems to be leftover from a different index with the same name. Remove the leftover shard in order to reuse the path with the current index ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index and shard.

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 “{} found shard on path: [{}] with a different index UUID – this shard seems to be leftover from a different index with the same name. Remove the leftover shard in order to reuse the path with the current index” classname is ShardPath.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

         Path loadedPath = null;
        for (Path path : paths) {
            ShardStateMetaData load = ShardStateMetaData.FORMAT.loadLatestState(logger; path);
            if (load != null) {
                if (load.indexUUID.equals(indexUUID) == false && IndexMetaData.INDEX_UUID_NA_VALUE.equals(load.indexUUID) == false) {
                    logger.warn("{} found shard on path: [{}] with a different index UUID - this shard seems to be leftover from a different index with the same name. Remove the leftover shard in order to reuse the path with the current index"; shardId; path);
                    throw new IllegalStateException(shardId + " index UUID in shard state was: " + load.indexUUID + " expected: " + indexUUID + " on shard path: " + path);
                }
                if (loadedPath == null) {
                    loadedPath = path;
                } else{




 

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