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Fix has_any_entity_changed

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Occaisonally has_any_entity_changed would throw the error: "Set changed
size during iteration" when taking the max of the `sorteddict`. While
its uncertain how that happens, its quite inefficient to iterate over
the entire dict anyway so we change to using the more traditional
`bisect_*` functions.
This commit is contained in:
Erik Johnston 2017-06-09 11:39:35 +01:00
parent 98bdb4468b
commit eed59dcc1e
1 changed files with 4 additions and 4 deletions
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8
synapse/util/caches/stream_change_cache.py
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@ -96,10 +96,10 @@ class StreamChangeCache(object):
if stream_pos >= self._earliest_known_stream_pos: if stream_pos >= self._earliest_known_stream_pos:
self.metrics.inc_hits() self.metrics.inc_hits()
if stream_pos >= max(self._cache): keys = self._cache.keys()
return False i = keys.bisect_right(stream_pos)
else:
return True return len(keys[i:]) > 0
else: else:
self.metrics.inc_misses() self.metrics.inc_misses()
return True return True