Downloading translog files from remote for shard – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 2.8-2.8

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Briefly, this error occurs when OpenSearch is trying to recover a shard by downloading its transaction log files from a remote node and encounters an issue. This could be due to network connectivity problems, insufficient disk space, or issues with the remote node. To resolve this, you can check the network connection between the nodes, ensure there is enough disk space for the download, and investigate the health and status of the remote node. If the problem persists, consider relocating the shard to a different node or restoring from a backup if available.

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This guide will help you check for common problems that cause the log ” Downloading translog files from remote for shard {} ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: shard, index.

Log Context

Log “Downloading translog files from remote for shard {}” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

        );; location);

    public static void download(TranslogTransferManager translogTransferManager; Path location) throws IOException {"Downloading translog files from remote for shard {} "; translogTransferManager.getShardId());
        TranslogTransferMetadata translogMetadata = translogTransferManager.readMetadata();
        if (translogMetadata != null) {
            if (Files.notExists(location)) {


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