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This exception has no message.
java.lang.NullPointerException: 	at com.datastax.driver.core.Metadata.buildTableMetadata(Metadata.java:127)	at com.datastax.driver.core.Metadata.rebuildSchema(Metadata.java:92)	at com.datastax.driver.core.ControlConnection.refreshSchema(ControlConnection.java:291)	at com.datastax.driver.core.ControlConnection.tryConnect(ControlConnection.java:230)	at com.datastax.driver.core.ControlConnection.reconnectInternal(ControlConnection.java:170)	at com.datastax.driver.core.ControlConnection.connect(ControlConnection.java:78)	at com.datastax.driver.core.Cluster$Manager.init(Cluster.java:977)	at com.datastax.driver.core.Cluster$Manager.newSession(Cluster.java:1014)	at com.datastax.driver.core.Cluster$Manager.access$200(Cluster.java:889)	at com.datastax.driver.core.Cluster.connect(Cluster.java:170)