[core] Avoid making rpc for local GetLocationFromOwner

[dayshah]

Why are these changes needed?

This codepath is used by the experimental get_object_locations API used by Ray Data. Most times the object owners will just be the driver where the request is made from, especially for data. This will speed up that happy path.

Related issue number

Checks

• [ ] I've signed off every commit(by using the -s flag, i.e., git commit -s) in this PR.
• [ ] I've run scripts/format.sh to lint the changes in this PR.
• [ ] I've included any doc changes needed for https://docs.ray.io/en/master/.
  • [ ] I've added any new APIs to the API Reference. For example, if I added a method in Tune, I've added it in doc/source/tune/api/ under the corresponding .rst file.
• [ ] I've made sure the tests are passing. Note that there might be a few flaky tests, see the recent failures at https://flakey-tests.ray.io/
• Testing Strategy
  • [ ] Unit tests
  • [ ] Release tests
  • [ ] This PR is not tested :(

[github-actions[bot]]

This pull request has been automatically marked as stale because it has not had any activity for 14 days. It will be closed in another 14 days if no further activity occurs. Thank you for your contributions.

You can always ask for help on our discussion forum or Ray's public slack channel.

If you'd like to keep this open, just leave any comment, and the stale label will be removed.

[github-actions[bot]]

This pull request has been automatically marked as stale because it has not had any activity for 14 days. It will be closed in another 14 days if no further activity occurs. Thank you for your contributions.

You can always ask for help on our discussion forum or Ray's public slack channel.

If you'd like to keep this open, just leave any comment, and the stale label will be removed.