Prefetch inputs in bazel workers.

PiperOrigin-RevId: 202092962

1 files changed, 11 insertions, 0 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/worker/WorkerSpawnRunner.java b/src/main/java/com/google/devtools/build/lib/worker/WorkerSpawnRunner.java
index 4168a27ae0..25f824aebf 100644
--- a/src/main/java/com/google/devtools/build/lib/worker/WorkerSpawnRunner.java
+++ b/src/main/java/com/google/devtools/build/lib/worker/WorkerSpawnRunner.java
@@ -275,6 +275,17 @@ final class WorkerSpawnRunner implements SpawnRunner {
                 .toString());
       }
 
+      try {
+        context.prefetchInputs();
+      } catch (IOException e) {
+        throw new UserExecException(
+            ErrorMessage.builder()
+                .message("IOException while prefetching for worker:")
+                .exception(e)
+                .build()
+                .toString());
+      }
+
       try (ResourceHandle handle =
           ResourceManager.instance().acquireResources(owner, spawn.getLocalResources())) {
         context.report(ProgressStatus.EXECUTING, getName());