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-rw-r--r--synapse/storage/chunk_ordered_table.py10
1 files changed, 3 insertions, 7 deletions
diff --git a/synapse/storage/chunk_ordered_table.py b/synapse/storage/chunk_ordered_table.py
index 442d82cbb2..d112b320a9 100644
--- a/synapse/storage/chunk_ordered_table.py
+++ b/synapse/storage/chunk_ordered_table.py
@@ -264,15 +264,11 @@ class ChunkDBOrderedListStore(OrderedListStore):
         with Measure(self.clock, "chunk_rebalance"):
             # We pick the interval to try and minimise the number of decimal
             # places, i.e. we round to nearest float with `rebalance_digits` and
-            # use that as the middle of the interval
+            # use that as one side of the interval
             order = self._get_order(node_id)
             a = round(order, self.rebalance_digits)
-            if order > a:
-                min_order = a
-                max_order = a + 10 ** -self.rebalance_digits
-            else:
-                min_order = a - 10 ** -self.rebalance_digits
-                max_order = a
+            min_order = a - 10 ** -self.rebalance_digits
+            max_order = a + 10 ** -self.rebalance_digits
 
             # Now we get all the nodes in the range. We add the minimum difference
             # to the bounds to ensure that we don't accidentally move a node to be