Update StorePartitionAccessor.cs

ZeroLevel/Services/PartitionStorage/Partition/StorePartitionAccessor.cs

@@ -100,6 +100,8 @@ namespace ZeroLevel.Services.PartitionStorage
             }
         }
         public IEnumerable<StorePartitionKeyValueSearchResult<TKey, TValue>> Iterate()
+        {
+            if (Directory.Exists(_catalog))
             {
                 TKey k;
                 TValue v;
@@ -124,6 +126,7 @@ namespace ZeroLevel.Services.PartitionStorage
                     }
                 }
             }
+        }
         public IEnumerable<StorePartitionKeyValueSearchResult<TKey, TValue>> IterateKeyBacket(TKey key)
         {
             TKey k;
@@ -203,6 +206,8 @@ namespace ZeroLevel.Services.PartitionStorage
             TKey k;
             TValue v;
             var filePath = Path.Combine(_catalog, fileName);
+            if (File.Exists(filePath))
+            {
                 if (_options.Index.Enabled)
                 {
                     var offsets = Indexes.GetOffset(keys, true);
@@ -287,11 +292,14 @@ namespace ZeroLevel.Services.PartitionStorage
                     }
                 }
             }
+        }
 
         private void RemoveKeyGroup(string fileName, TKey[] keys, bool inverseRemove, bool autoReindex)
         {
             TKey k;
             var filePath = Path.Combine(_catalog, fileName);
+            if (File.Exists(filePath))
+            {
                 // 1. Find ranges
                 var ranges = new List<FilePositionRange>();
                 if (_options.Index.Enabled && autoReindex)
@@ -425,6 +433,7 @@ namespace ZeroLevel.Services.PartitionStorage
                     RebuildFileIndex(filePath);
                 }
             }
+        }
 
         #endregion