def getClientByNode(self, shardNodeInfo):
client = self.serverClientMapping.get(shardNodeInfo)
if client != None:
return client
client = PiedisClient()
client.setHost(shardNodeInfo.getHost())
client.setPort(shardNodeInfo.getPort())
client.setConnectTimeout(self.connectTimeout)
self.serverClientMapping[shardNodeInfo] = client
return client
