commit 4592a6c43233d2afd719ab73dcffa974cefed55d
author nharmata <nharmata@google.com> Fri Sep 25 11:00:06 2020 -0700
committer Copybara-Service <copybara-worker@google.com> Fri Sep 25 11:01:07 2020 -0700
tree 257e4922d2015f7618bf0aa1f8c67de9f7907455
parent f060b55820bb8b2df382c4c9ef394d0250a56fdd

Improve comment in UnixFileSystem#getFastDigest.

PiperOrigin-RevId: 333766876

src/main/java/com/google/devtools/build/lib/unix/UnixFileSystem.java

diff --git a/src/main/java/com/google/devtools/build/lib/unix/UnixFileSystem.java b/src/main/java/com/google/devtools/build/lib/unix/UnixFileSystem.java
index 4b8ef9e..e29da66 100644
--- a/src/main/java/com/google/devtools/build/lib/unix/UnixFileSystem.java
+++ b/src/main/java/com/google/devtools/build/lib/unix/UnixFileSystem.java
@@ -408,8 +408,8 @@
 
   @Override
   protected byte[] getFastDigest(Path path) throws IOException {
-    // Attempt to obtain the digest from an extended attribute attached to the file. This prevents
-    // the checksum from being recomputed unnecessarily.
+    // Attempt to obtain the digest from an extended attribute attached to the file. This is much
+    // faster than reading and digesting the file's contents on the fly, especially for large files.
     return hashAttributeName.isEmpty() ? null : getxattr(path, hashAttributeName, true);
   }