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Increase range of rebalance interval

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This both simplifies the code, and ensures that the target node is
roughly in the center of the range rather than at an end.
This commit is contained in:
Erik Johnston
2018-05-17 15:09:31 +01:00
parent c771c124d5
commit d4e4a7344f
1 changed files with 3 additions and 7 deletions
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10
synapse/storage/chunk_ordered_table.py
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@@ -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