From dba0a2d729fdbc0381bd6fe5c8bd94280f117d5e Mon Sep 17 00:00:00 2001
From: Suraj Gupta <suraj.gupta@snowflake.com>
Date: Tue, 16 Nov 2021 09:46:51 -0500
Subject: [PATCH] Add comment to clarify empty UID usage.

---
 fdbserver/BlobManager.actor.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fdbserver/BlobManager.actor.cpp b/fdbserver/BlobManager.actor.cpp
index b077c22da8..75114d029a 100644
--- a/fdbserver/BlobManager.actor.cpp
+++ b/fdbserver/BlobManager.actor.cpp
@@ -1080,6 +1080,7 @@ ACTOR Future<Void> recoverBlobManager(BlobManagerData* bmData) {
 				std::tie(splitState, version) = decodeBlobGranuleSplitValue(split.value);
 				const KeyRange range = blobGranuleSplitKeyRangeFor(parentGranuleID);
 				if (splitState <= BlobGranuleSplitState::Initialized) {
+					// the empty UID signifies that we need to find an owner (worker) for this range
 					workerAssignments.insert(range, UID());
 				}
 			}