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If the same as the earliest key, assume nothing has changed.
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@ -49,6 +49,11 @@ class StreamChangeCache(object):
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cache_counter.inc_misses(self.name)
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cache_counter.inc_misses(self.name)
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return True
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return True
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if stream_pos == self._earliest_known_stream_pos:
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# If the same as the earliest key, assume nothing has changed.
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cache_counter.inc_hits(self.name)
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return False
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latest_entity_change_pos = self._entity_to_key.get(entity, None)
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latest_entity_change_pos = self._entity_to_key.get(entity, None)
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if latest_entity_change_pos is None:
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if latest_entity_change_pos is None:
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cache_counter.inc_misses(self.name)
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cache_counter.inc_misses(self.name)
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