add comments as per PR feedback

src/DurableTask.Netherite/StorageLayer/Faster/AzureBlobs/BlobManager.cs

@@ -1140,6 +1140,9 @@ await this.PerformWithRetriesAsync(
 
                 await this.WriteCheckpointMetadataAsync();
 
+                // we boost the tracing after three failed attempts. This boosting applies to the recovery part only.
+                // After thirty attempts, we stop boosting since it seems unlikely
+                // that there is any more information after that that cannot be found in the logs for the first 30 attempts.
                 if (this.CheckpointInfo.RecoveryAttempts > 3 && this.CheckpointInfo.RecoveryAttempts < 30)
                 {
                     this.TraceHelper.BoostTracing = true;

src/DurableTask.Netherite/StorageLayer/Faster/PartitionStorage.cs

@@ -191,6 +191,8 @@ async Task TerminationWrapper(Task what)
                     {
                         // replay log as the store checkpoint lags behind the log
 
+                        // disable prefetch if we have had many unsuccessful recovery attempts, or if the settings say so    
+                        // We choose 6 as the threshold since the tracing gets boosted after 3 attempts, and we want to see 3 attempts with boosted tracing before we disable prefetch
                         bool disablePrefetch = this.blobManager.CheckpointInfo.RecoveryAttempts > 6 || this.settings.DisablePrefetchDuringReplay;
 
                         await this.TerminationWrapper(this.storeWorker.ReplayCommitLog(this.logWorker, prefetch: !disablePrefetch));