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(Fix)race condition during host IP address update #654

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(Fix)race condition during host IP address update #654

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8 changes: 5 additions & 3 deletions cassandra/cluster.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3831,14 +3831,16 @@ def _refresh_node_list_and_token_map(self, connection, preloaded_results=None,
host = self._cluster.metadata.get_host_by_host_id(host_id)
if host and host.endpoint != endpoint:
log.debug("[control connection] Updating host ip from %s to %s for (%s)", host.endpoint, endpoint, host_id)
old_endpoint = host.endpoint
host.endpoint = endpoint
self._cluster.metadata.update_host(host, old_endpoint)
reconnector = host.get_and_set_reconnection_handler(None)
if reconnector:
reconnector.cancel()
self._cluster.on_down(host, is_host_addition=False, expect_host_to_be_down=True)

old_endpoint = host.endpoint
host.endpoint = endpoint
self._cluster.metadata.update_host(host, old_endpoint)
self._cluster.on_up(host)

if host is None:
log.debug("[control connection] Found new host to connect to: %s", endpoint)
host, _ = self._cluster.add_host(endpoint, datacenter=datacenter, rack=rack, signal=True, refresh_nodes=False, host_id=host_id)
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