[jira] [Created] (SPARK-28606) Update CRAN key to recover docker image generation

["Dongjoon Hyun (JIRA)" <ji...@apache.org>]

Dongjoon Hyun created SPARK-28606:
-------------------------------------

             Summary: Update CRAN key to recover docker image generation
                 Key: SPARK-28606
                 URL: https://issues.apache.org/jira/browse/SPARK-28606
             Project: Spark
          Issue Type: Bug
          Components: Project Infra
    Affects Versions: 2.4.4, 3.0.0
            Reporter: Dongjoon Hyun


CRAN repo changed the key.
- https://cran.r-project.org/bin/linux/ubuntu/README.html
{code}
Err:1 https://cloud.r-project.org/bin/linux/ubuntu bionic-cran35/ InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 51716619E084DAB9
...
W: GPG error: https://cloud.r-project.org/bin/linux/ubuntu bionic-cran35/ InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 51716619E084DAB9
E: The repository 'https://cloud.r-project.org/bin/linux/ubuntu bionic-cran35/ InRelease' is not signed.
{code}

Although they changed the key, but it reuses `cran35` for R 3.6.
{code}
Even though R has moved to version 3.6, for compatibility the sources.list entry still uses the cran3.5 designation.
{code}

This issue aims to recover the docker image generation first. We will verify the R doc generation in a separate issue.



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