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Important

The SingleStore 9.1 release candidate (RC) is available now. It will be promoted to general availability (GA) soon and at that time it will be renamed to SingleStore 10.

In the interim, SingleStore 9.1 RC can be used to preview, evaluate, and provide feedback on the new and upcoming features in SingleStore 10, while SingleStore 9.0 is recommended for production workloads.

EXPLAIN RESTORE REDUNDANCY

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The EXPLAIN RESTORE REDUNDANCY command returns the set of steps RESTORE REDUNDANCY would run.

Syntax

EXPLAIN RESTORE REDUNDANCY ON db_name

Remarks

  • db_name: name of the SingleStore database.

  • This command must be run on the master aggregator node.

Examples

The following query returns a set of steps that RESTORE REDUNDANCY will run if executed at the same time on trades database.

EXPLAIN RESTORE REDUNDANCY ON trades;
+----------------------+---------+-------------+-------------+-------+
| Action               | Ordinal | Target_Host | Target_Port | Phase |
+----------------------+---------+-------------+-------------+-------+
| COPY PARTITION FORCE |       0 | 127.0.0.1   |        3309 |     2 |
| COPY PARTITION FORCE |       1 | 127.0.0.1   |        3309 |     2 |
| COPY PARTITION FORCE |       2 | 127.0.0.1   |        3309 |     2 |
| COPY PARTITION FORCE |       3 | 127.0.0.1   |        3309 |     2 |
| COPY PARTITION FORCE |       4 | 127.0.0.1   |        3309 |     2 |
| COPY PARTITION FORCE |       5 | 127.0.0.1   |        3309 |     2 |
| COPY PARTITION FORCE |       6 | 127.0.0.1   |        3309 |     2 |
| COPY PARTITION FORCE |       7 | 127.0.0.1   |        3309 |     2 |
+----------------------+---------+-------------+-------------+-------+
8 rows in set (0.01 sec)

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Verification instructions

Note: You must install cosign to verify the authenticity of the SingleStore file.

Use the following steps to verify the authenticity of singlestoredb-server, singlestoredb-toolbox, singlestoredb-studio, and singlestore-client SingleStore files that have been downloaded.

You may perform the following steps on any computer that can run cosign, such as the main deployment host of the cluster.

  1. (Optional) Run the following command to view the associated signature files.

    curl undefined

  2. Download the signature file from the SingleStore release server.

    • Option 1: Click the Download Signature button next to the SingleStore file.

    • Option 2: Copy and paste the following URL into the address bar of your browser and save the signature file.

    • Option 3: Run the following command to download the signature file.

      curl -O undefined

  3. After the signature file has been downloaded, run the following command to verify the authenticity of the SingleStore file.

    echo -n undefined |
        cosign verify-blob --certificate-oidc-issuer https://oidc.eks.us-east-1.amazonaws.com/id/CCDCDBA1379A5596AB5B2E46DCA385BC \
          --certificate-identity https://kubernetes.io/namespaces/freya-production/serviceaccounts/job-worker \
          --bundle undefined \
          --new-bundle-format -
    Verified OK

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