Do not purge inUse connections #197
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zhenlineo
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technige
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Nov 29, 2017
neo4j/v1/routing.py
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| self.ttl = new_routing_table.ttl | ||
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| def servers(self): | ||
| return set(self.routers.elements() + self.writers.elements() + self.readers.elements()) |
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This can just be return set(self.routers) | set(self.writers) | set(self.readers) and there is no need to add an elements accessor on OrderedSet.
technige
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neo4j/v1/routing.py
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| e.update(OrderedDict.fromkeys(elements)) | ||
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| def elements(self): | ||
| return list(self._elements) |
technige
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Nov 29, 2017
neo4j/bolt/connection.py
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| conn.close() | ||
| except IOError: | ||
| pass | ||
| if len(connections) == 0: |
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November 29, 2017 13:44
…outing table is available Instead we deactive the server (a.k.a. closing all idle connections) in connection pool. When an connection failure happens, the connection server will be removed from the routing table and all idle connections with this server will be closed in the connection pool. When a new routing table is available, all idle connections towards the servers that are not in the new routing table will be removed. If the server has no inUse connections, then this server will also be totally removed from the connection pool. Note: there is no extra protection to against `acquire` to create a new connection with an inactive server except that the server should not be in the routing table and therefore should not be used to `acquire` new connections. When error happens on a connection, we will deactivate the server but we will probably not remove all server's connections from connection pool as the failed connection is highly still inUse by the broken session.
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Do not purge inUse connections when connection error happens or new routing table is available
Instead we deactive the server (a.k.a. closing all idle connections) in connection pool.
When an connection failure happens, the connection server will be removed from the routing table and all idle connections with this server will be closed in the connection pool.
When a new routing table is available, all idle connections towards the servers that are not in the new routing table will be removed. If the server has no inUse connections, then this server will also be totally removed from the connection pool.
Note:
acquireto create a new connection with an inactive server except that the server should not be in the routing table and therefore should not be used toacquirenew connections.