Upgrading multi data dir to – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 2.3-2.3

Before you dig into reading this guide, have you tried asking OpsGPT what this log means? You’ll receive a customized analysis of your log.

Try OpsGPT now for step-by-step guidance and tailored insights into your Elasticsearch operation.

Briefly, this error occurs when Elasticsearch is trying to upgrade multiple data directories but encounters an issue. This could be due to inconsistent data across the directories or insufficient permissions. To resolve this, ensure that all data directories are consistent and that Elasticsearch has the necessary permissions to access and modify them. Additionally, check if there’s enough disk space for the upgrade process. If the problem persists, consider upgrading each directory individually or consult the Elasticsearch documentation for further troubleshooting steps.

For a complete solution to your to your search operation, try for free AutoOps for Elasticsearch & OpenSearch . With AutoOps and Opster’s proactive support, you don’t have to worry about your search operation – we take charge of it. Get improved performance & stability with less hardware.

This guide will help you check for common problems that cause the log ” {} upgrading multi data dir to {} ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: Index and Memory.

Log Context

Log “{} upgrading multi data dir to {}” classname is MultiDataPathUpgrader.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

         final Path[] paths = nodeEnvironment.availableShardPaths(shard); // custom data path doesn't need upgrading
        if (isTargetPathConfigured(paths; targetPath) == false) {
            throw new IllegalArgumentException("shard path must be one of the shards data paths");
        }
        assert needsUpgrading(shard) : "Should not upgrade a path that needs no upgrading";
        logger.info("{} upgrading multi data dir to {}"; shard; targetPath.getDataPath());
        final ShardStateMetaData loaded = ShardStateMetaData.FORMAT.loadLatestState(logger; paths);
        if (loaded == null) {
            throw new IllegalStateException(shard + " no shard state found in any of: " + Arrays.toString(paths) + " please check and remove them if possible");
        }
        logger.info("{} loaded shard state {}"; shard; loaded);




 

How helpful was this guide?

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?