Add some additional debugging if a dep is unexpectedly absent.

PiperOrigin-RevId: 207178336
bazelbuild · Aug 2, 2018 · 1ae4fc2 · 1ae4fc2
1 parent b6fa8eb
commit 1ae4fc2
Showing 1 changed file with 10 additions and 1 deletion.
diff --git a/src/main/java/com/google/devtools/build/skyframe/SkyFunctionEnvironment.java b/src/main/java/com/google/devtools/build/skyframe/SkyFunctionEnvironment.java
@@ -222,11 +222,20 @@ private Map<SkyKey, SkyValue> batchPrefetch(
             Reason.PREFETCH,
             depKeysAsSet == null ? depKeys.getAllElementsAsIterable() : depKeysAsSet);
     if (batchMap.size() != depKeys.numElements()) {
+      NodeEntry inFlightEntry = null;
+      try {
+        inFlightEntry = evaluatorContext.getGraph().get(null, Reason.OTHER, requestor);
+      } catch (InterruptedException e) {
+        // We're crashing, don't mask it.
+        Thread.currentThread().interrupt();
+      }
       throw new IllegalStateException(
           "Missing keys for "
               + keyForDebugging
               + ": "
-              + Sets.difference(depKeys.toSet(), batchMap.keySet()));
+              + Sets.difference(depKeys.toSet(), batchMap.keySet())
+              + "\n\n"
+              + inFlightEntry);
     }
     ImmutableMap.Builder<SkyKey, SkyValue> depValuesBuilder =
         ImmutableMap.builderWithExpectedSize(batchMap.size());