这就是我通过 Astyanax 连接到 Cassandra 的方式：
Builder builder = new AstyanaxContext.Builder()
.forCluster(clusterName)
.forKeyspace(keyspace2)
.withAstyanaxConfiguration(new AstyanaxConfigurationImpl()
.setDiscoveryType(NodeDiscoveryType.RING_DESCRIBE)
)
.withConnectionPoolConfiguration(new ConnectionPoolConfigurationImpl("MyConnectionPool")
.setMaxConnsPerHost(2)
.setInitConnsPerHost(2)
.setSeeds("localhost,localhost")
)
.withConnectionPoolMonitor(new CountingConnectionPoolMonitor());
AstyanaxConfigurationImpl config = new AstyanaxConfigurationImpl();
config.setDefaultWriteConsistencyLevel(ConsistencyLevel.CL_QUORUM);
config.setDefaultReadConsistencyLevel(ConsistencyLevel.CL_QUORUM);
builder = builder.withAstyanaxConfiguration(config);
如果在种子中我只输入“localhost”，它就可以正常工作。如果我输入“localhost，localhost”或“localhost”，它会给我下面的异常。我会错过什么？问题不在于主机，地址是正确的......如果我使用 CL_Quorum，是否有任何我应该注意的配置？
java.lang.RuntimeException: com.netflix.astyanax.connectionpool.exceptions.TokenRangeOfflineException: TokenRangeOfflineException: [host=localhost(127.0.0.1):9160, latency=10(10), attempts=1] UnavailableException()
at com.alvazan.orm.layer9z.spi.db.cassandra.CursorKeysToRows.execute(CursorKeysToRows.java:157)
at com.alvazan.orm.layer9z.spi.db.cassandra.CursorKeysToRows.loadCache(CursorKeysToRows.java:100)
at com.alvazan.orm.layer9z.spi.db.cassandra.CursorKeysToRows.nextImpl(CursorKeysToRows.java:65)
at com.alvazan.orm.layer0.base.CursorRow.nextImpl(CursorRow.java:33)
at com.alvazan.orm.api.z8spi.iter.AbstractCursor.next(AbstractCursor.java:10)
at com.alvazan.orm.layer0.base.BaseEntityManagerImpl.find(BaseEntityManagerImpl.java:132)
at com.alvazan.orm.layer0.base.BaseEntityManagerImpl.saveMetaData(BaseEntityManagerImpl.java:235)
at com.alvazan.orm.layer0.base.BaseEntityManagerFactoryImpl.rescan(BaseEntityManagerFactoryImpl.java:102)
at com.alvazan.orm.layer0.base.BaseEntityManagerFactoryImpl.setup(BaseEntityManagerFactoryImpl.java:131)
at com.alvazan.orm.impl.bindings.BootstrapImpl.createInstanceImpl(BootstrapImpl.java:64)
at com.alvazan.orm.impl.bindings.BootstrapImpl.createInstance(BootstrapImpl.java:35)
at com.alvazan.orm.api.base.Bootstrap.create(Bootstrap.java:57)
at com.alvazan.orm.api.base.Bootstrap.create(Bootstrap.java:52)
at com.alvazan.orm.api.base.Bootstrap.create(Bootstrap.java:45)
at com.alvazan.orm.api.base.Bootstrap.create(Bootstrap.java:24)
at com.s1mbi0se.dmp.da.dao.PlayOrmConfiguration.init(PlayOrmConfiguration.java:39)
at com.s1mbi0se.dmp.da.dao.TestUserDao.testFindAllUsers(TestUserDao.java:73)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: com.netflix.astyanax.connectionpool.exceptions.TokenRangeOfflineException: TokenRangeOfflineException: [host=localhost(127.0.0.1):9160, latency=10(10), attempts=1] UnavailableException()
at com.netflix.astyanax.thrift.ThriftConverter.ToConnectionPoolException(ThriftConverter.java:165)
at com.netflix.astyanax.thrift.AbstractOperationImpl.execute(AbstractOperationImpl.java:60)
at com.netflix.astyanax.thrift.AbstractOperationImpl.execute(AbstractOperationImpl.java:27)
at com.netflix.astyanax.thrift.ThriftSyncConnectionFactoryImpl$1.execute(ThriftSyncConnectionFactoryImpl.java:131)
at com.netflix.astyanax.connectionpool.impl.AbstractExecuteWithFailoverImpl.tryOperation(AbstractExecuteWithFailoverImpl.java:52)
at com.netflix.astyanax.connectionpool.impl.AbstractHostPartitionConnectionPool.executeWithFailover(AbstractHostPartitionConnectionPool.java:229)
at com.netflix.astyanax.thrift.ThriftColumnFamilyQueryImpl$4.execute(ThriftColumnFamilyQueryImpl.java:457)
at com.alvazan.orm.layer9z.spi.db.cassandra.CursorKeysToRows.execute(CursorKeysToRows.java:155)
... 39 more
Caused by: UnavailableException()
at org.apache.cassandra.thrift.Cassandra$multiget_slice_result.read(Cassandra.java:9722)
at org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:78)
at org.apache.cassandra.thrift.Cassandra$Client.recv_multiget_slice(Cassandra.java:613)
at org.apache.cassandra.thrift.Cassandra$Client.multiget_slice(Cassandra.java:597)
at com.netflix.astyanax.thrift.ThriftColumnFamilyQueryImpl$4$1.internalExecute(ThriftColumnFamilyQueryImpl.java:463)
at com.netflix.astyanax.thrift.ThriftColumnFamilyQueryImpl$4$1.internalExecute(ThriftColumnFamilyQueryImpl.java:460)
at com.netflix.astyanax.thrift.AbstractOperationImpl.execute(AbstractOperationImpl.java:55)
... 45 more