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NoHostAvailableException

Caused by: com.datastax.driver.core.exceptions.NoHostAvailableException: All host(s) tried for query failed (tried: localhost/0:0:0:0:0:0:0:1:9042 (com.datastax.driver.core.exceptions.TransportException: [localhost/0:0:0:0:0:0:0:1:9042] Cannot connect), localhost/127.0.0.1:9042 (com.datastax.driver.core.exceptions.TransportException: [localhost/127.0.0.1:9042] Cannot connect))

at com.datastax.driver.core.ControlConnection.reconnectInternal(ControlConnection.java:233) ~[cassandra-driver-core-3.1.3.jar:na]

at com.datastax.driver.core.ControlConnection.connect(ControlConnection.java:79) ~[cassandra-driver-core-3.1.3.jar:na]

at com.datastax.driver.core.Cluster$Manager.init(Cluster.java:1473) ~[cassandra-driver-core-3.1.3.jar:na]

at com.datastax.driver.core.Cluster.init(Cluster.java:159) ~[cassandra-driver-core-3.1.3.jar:na

這是怎么回事??？老師，同學(xué)們，本來好好的結(jié)果就出現(xiàn)個(gè)這個(gè)異常