Snapshot clone started – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when OpenSearch starts the process of cloning a snapshot. It’s not an error message, but an informational log indicating that a snapshot clone operation has begun. If this operation is not intended or causing issues, you can resolve it by stopping the snapshot clone operation. Alternatively, you can check your OpenSearch configuration to ensure that automatic snapshot cloning is not enabled if it’s not required. Also, ensure that your storage space is sufficient to handle the snapshot clone operation to prevent any potential issues.

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This guide will help you check for common problems that cause the log ” snapshot clone [{}] started ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: snapshot.

Log Context

Log “snapshot clone [{}] started” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :


            public void clusterStateProcessed(String source; ClusterState oldState; final ClusterState newState) {
      "snapshot clone [{}] started"; snapshot);
                addListener(snapshot; ActionListener.wrap(r -> listener.onResponse(null); listener::onFailure));
                startCloning(repository; newEntry);



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