| commit | 526ea392ac50a0f11eb65fd29a6cde5962a08c97 | [log] [tgz] |
|---|---|---|
| author | gregce <gregce@google.com> | Wed May 26 19:48:32 2021 -0700 |
| committer | Copybara-Service <copybara-worker@google.com> | Wed May 26 19:49:58 2021 -0700 |
| tree | 1dc5e0c33a6182156dceb004ebda0d5f96fa1c43 | |
| parent | e030be9f16a662ff4363d311881fe56789bb9096 [diff] |
Java compilation: generate distinct .jdeps for the executor vs. local filesystems. This supports cache-sharing Java compilation across CPUs. .jdeps is essentially a manifest of which files compilation consumes. This change splits it in two: the compilation running on the executor produces a .jdeps with the paths the executor sees (call this "stripped" deps). Bazel then rewrites this file locally with the "full" paths on the local filesystem (call this "full" deps). This lets the executor remove config prefixes (like "/x86-opt/") from its actions without breaking the paths Bazel and post-build consumers need. Another option is to simply change the format of .jdeps. But there are other consumers of this file besides Bazel. So that approach would be much more complicated. Experiments show 43% fewer executor Java actions on a sample build. For https://github.com/bazelbuild/bazel/issues/6526. PiperOrigin-RevId: 376081433
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