Failed to load shard path trying to remove leftover – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch tries to load a shard path that doesn’t exist or is inaccessible. This could be due to a file system issue, incorrect permissions, or a disk failure. To resolve this issue, you can check the file system for errors and fix them, ensure that Elasticsearch has the necessary permissions to access the shard path, or replace the faulty disk. If the shard data is not important, you can also delete the shard path manually.

This guide will help you check for common problems that cause the log ” {} failed to load shard path; trying to remove leftover ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index, shard.

Log Context

Log “{} failed to load shard path; trying to remove leftover” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

            lock = nodeEnv.shardLock(shardId; "starting shard");
            ShardPath path;
            try {
                path = ShardPath.loadShardPath(logger; nodeEnv; shardId; this.indexSettings.customDataPath());
            } catch (IllegalStateException ex) {
                logger.warn("{} failed to load shard path; trying to remove leftover"; shardId);
                try {


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