[VOTE] Release Apache Cloudberry (Incubating) 2.1.0-rc2

Hello Incubator Community,

This is a call for a vote to release Apache Cloudberry (Incubating) 2.1.0-rc2.

The Apache Cloudberry (Incubating) community has voted to release
version 2.1.0-rc2. We now kindly request the Incubator PMC's approval.


**Key changes since 2.1.0-rc1**

The main changes are to fix the license issues pointed out in the RC1,
including:

- cloudberry:
* No changes. Fixes for the license typo and documentation updates
pointed out during the RC1 round will be included in the next release.

- cloudberry-pxf
* Add `cloudberry-pxf-release.sh` to assist the release manager in
creating ASF releases.
* Update `Makefile` to include `fdw` in DEB/RPM packages.
* Remove `gradle-wrapper.jar` from the source tree; it is now
downloaded and validated during the build process.
* Add ASF license headers to files created by the Cloudberry community.
* Update the `LICENSE` file to reflect the latest changes from third-parties.
* Add a new `README.apache.md` to document historical attributions
and describe test archive files.
* Add a new `pom.xml` with necessary exclusions for running `mvn
apache-rat:check` during license audits.
* Add `.github/workflows/apache-rat-audit.yml` to perform regular
license checks on PRs and pushes.

- cloudberry-backup
* Update the `LICENSE` file with correct open-source attributions.
* Add a new `README.apache.md` to document historical attributions
and describe test archive files.
* Add a new `pom.xml` with necessary exclusions for running `mvn
apache-rat:check` during license audits.
* Add `.github/workflows/apache-rat-audit.yml` to perform regular
license checks on PRs and pushes.


Community vote thread:
https://lists.apache.org/thread/7ozvb3808jxyyr105kbphhpj1dz5g7yk

Vote result thread:
https://lists.apache.org/thread/xzqzp6scvxd00gfxx685nks7ykc7bpcr

Release candidate artifacts:
https://dist.apache.org/repos/dist/dev/incubator/cloudberry/2.1.0-incubating-rc2/

Git tag & commit for the release:
- https://github.com/apache/cloudberry/tree/2.1.0-incubating-rc2 (bdf90c5)
- https://github.com/apache/cloudberry-backup/tree/2.1.0-incubating-rc2
( 3b5451f )
- https://github.com/apache/cloudberry-pxf/tree/2.1.0-incubating-rc2 (118f588)

The artifacts have been signed with key
[9A36AA272348A207E193A49C500708B75754FB7C], corresponding to
[email protected], available here:
https://downloads.apache.org/incubator/cloudberry/KEYS

Please vote on releasing this candidate as Apache Cloudberry (Incubating) 2.1.0.

[ ] +1 Approve the release
[ ] 0 No opinion
[ ] -1 Disapprove (please explain why)

This vote will be open for at least 72 hours.

Checklist for reference:

[ ] Download links are valid and accessible.
[ ] GPG signature is valid for the release artifact using the KEYS file.
[ ] SHA512 checksums are correct and verified.
[ ] Source release artifact filename includes "incubating".
[ ] LICENSE, NOTICE, and DISCLAIMER files exist and are accurate.
[ ] No unexpected binary files in the source release.
[ ] All source files have appropriate ASF headers (excluding generated
files and legacy files).
[ ] Build completes successfully from source with clear instructions.

More detailed checklist, please refer to:
https://github.com/apache/cloudberry/wiki/Source-Release-Checklist

Build/Install guides (for reference):
- cloudberry: https://cloudberry.apache.org/docs/deployment/quick-build#for-apache-cloudberry-210
- cloudberry-pxf:
https://github.com/apache/cloudberry-pxf/blob/2.1.0-incubating-rc2/README.md
- cloudberry-backup:
https://github.com/apache/cloudberry-backup/blob/2.1.0-incubating-rc2/README.md

To learn more about Apache Cloudberry (Incubating), please see
https://cloudberry.apache.org/


Best,
Dianjin Wang
On behalf of the Apache Cloudberry (Incubating) community