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EXPLAIN RESTORE REDUNDANCY

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Returns the set of steps RESTORE REDUNDANCY would run if executed.

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)

Last modified: November 16, 2022

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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