133tosakarin commented on code in PR #1142:
URL: https://github.com/apache/ratis/pull/1142#discussion_r1742436405


##########
ratis-server/src/main/java/org/apache/ratis/server/storage/SnapshotManager.java:
##########
@@ -114,7 +115,8 @@ public void installSnapshot(InstallSnapshotRequestProto 
request, StateMachine st
 
     // TODO: Make sure that subsequent requests for the same installSnapshot 
are coming in order,
     // and are not lost when whole request cycle is done. Check requestId and 
requestIndex here
-
+    MessageDigest digester = newMd5Digest();
+    digester.reset();

Review Comment:
   Since I am not sure if it is a problem with JavaUtils.memoize, but I can 
confirm that it is a problem with digest, my idea is to use a new digest each 
time, which is more secure and reliable, and also avoids the situation where 
the digest calculation buffer is destroyed and the final result is incorrect



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