Translog directory translogPath must exist and be a directory – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch cannot find the translog directory at the specified path or the path does not lead to a directory. The translog (transaction log) is crucial for Elasticsearch’s operation. To resolve this issue, ensure that the specified translog path exists and is a directory. If it doesn’t exist, create it. If it’s not a directory, either change the path to point to a directory or convert the existing path into a directory. Also, check the permissions to ensure Elasticsearch has access to the directory.

This guide will help you check for common problems that cause the log ” translog directory [” + translogPath + “]; must exist and be a directory ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: shard, index.

Log Context

Log “translog directory [” + translogPath + “]; must exist and be a directory” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 findAndProcessShardPath(options; environment; dataPaths; clusterState; shardPath -> {
 final Path indexPath = shardPath.resolveIndex();
 final Path translogPath = shardPath.resolveTranslog();
 if (Files.exists(translogPath) == false || Files.isDirectory(translogPath) == false) {
 throw new ElasticsearchException("translog directory [" + translogPath + "]; must exist and be a directory");
 }  final PrintWriter writer = terminal.getWriter();
 final PrintStream printStream = new PrintStream(new OutputStream() {