Remote: Do not upload empty output to remote cache.

An unintended side-effect of change cc2b3ecb9283ebdb297fc3fb6407f4697c850ac2 is that zero-sized blob won't be uploaded to gRPC cache. However, the behavior is existed for a long time and the REAPI spec is also updated accordingly. This change makes the behavior explicit and brings it to other remote cache backends.

Context https://github.com/bazelbuild/bazel/issues/11063.

Fixes https://github.com/bazelbuild/bazel/issues/13349.

Closes #13594.

PiperOrigin-RevId: 384457129
3 files changed
tree: 4cc62be7bc7025448e6ff72840404b6586dd4247
  1. .bazelci/
  2. examples/
  3. scripts/
  4. site/
  5. src/
  6. third_party/
  7. tools/
  8. .bazelrc
  9. .gitattributes
  10. .gitignore
  11. AUTHORS
  12. BUILD
  13. CHANGELOG.md
  14. CODEBASE.md
  15. CODEOWNERS
  16. combine_distfiles.py
  17. combine_distfiles_to_tar.sh
  18. compile.sh
  19. CONTRIBUTING.md
  20. CONTRIBUTORS
  21. distdir.bzl
  22. distdir_deps.bzl
  23. ISSUE_TEMPLATE.md
  24. LICENSE
  25. README.md
  26. WORKSPACE
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