Hive18799

[alanfgates]

This is based off of Harsha's pull request #393 . I made the following changes:

1. I rebased it against master. Since the metastore is now split into common and server, I put all of the client stuff in a new module standalone-metastore/registry-client and the server stuff into metastore-server. Harsha, feedback on whether I put the right things in the right places would be helpful.
2. I fixed one thrift request that had multiple arguments rather than a struct.

There are no tests in this code. That's a problem, since this is a lot of code. I assume there are tests for this code in the current registry project. Did you intend to move them separately?

[harshach]

@alanfgates I might have missed the tests. Let me add those.

[alanfgates]

@harshach Note, this also only has DB changes for the hive 4.0 installation on derby. It needs to be added to the upgrade path for derby (should be the 3.2 to 4.0 script) and both installation and upgrade on mysql, mssql, oracle, and postgres.

[github-actions]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.
Feel free to reach out on the dev@hive.apache.org list if the patch is in need of reviews.