Important

Helios features are now enabled during weekly update windows and are no longer directly tied to SingleStore engine releases. Refer to the release notes to view the latest features available in your Helios cluster.

Debugging

SQL Pushdown Debugging

Use df.explain() to show which parts of a query are being pushed down. It can also be used for debugging if you encounter an issue. Additionally, if you pass the argument true, you get more information in the output, including pre- and post-optimization passes.

Other

In addition, the singlestore-spark-connector outputs a lot of helpful information when the TRACE log level is enabled for the com.singlestore.spark package. You can do this in your log4j configuration by adding the following line: log4j.logger.com.singlestore.spark=TRACE. Make sure not to leave it in place since it generates a huge amount of tracing output.

Last modified: February 10, 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.

(Optional) Run the following command to view the associated signature files.
Shell
```
curl undefined
```
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.
  Shell
```
curl -O undefined
```

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

Shell

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

Debugging

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SQL Pushdown Debugging

Other

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