【发布时间】：2014-05-22 05:35:53
【问题描述】：
我正在使用 cassandra 2.0.7 坐在远程服务器上侦听非默认端口
<code>
---cassandra.yaml
rpc_address: 0.0.0.0
rpc_port: 6543
</code>
我正在尝试使用以下配置使用 titan-0.4.4（java API，也尝试使用 rexster）连接到服务器：
<code>
storage.hostname=172.182.183.215
storage.backend=cassandra
storage.port=6543
storage.keyspace=abccorp
</code>
它没有连接，我在下面看到以下异常。但是，如果我在尝试执行代码/rexster 的同一主机上使用 cqlsh，则可以毫无问题地连接。有人看过吗？
<code>
0 [main] INFO com.netflix.astyanax.connectionpool.impl.ConnectionPoolMBeanManager - Registering mbean: com.netflix.MonitoredResources:type=ASTYANAX,name=ClusterTitanConnectionPool,ServiceType=connectionpool
49 [main] INFO com.netflix.astyanax.connectionpool.impl.CountingConnectionPoolMonitor - AddHost: 172.182.183.215
554 [main] INFO com.netflix.astyanax.connectionpool.impl.ConnectionPoolMBeanManager - Registering mbean: com.netflix.MonitoredResources:type=ASTYANAX,name=KeyspaceTitanConnectionPool,ServiceType=connectionpool
555 [main] INFO com.netflix.astyanax.connectionpool.impl.CountingConnectionPoolMonitor - AddHost: 172.182.183.215
999 [main] INFO com.netflix.astyanax.connectionpool.impl.CountingConnectionPoolMonitor - AddHost: 127.0.0.1
1000 [main] INFO com.netflix.astyanax.connectionpool.impl.CountingConnectionPoolMonitor - RemoveHost: 172.182.183.215
2366 [main] INFO com.thinkaurelius.titan.diskstorage.Backend - Initiated backend operations thread pool of size 16
41523 [RingDescribeAutoDiscovery] WARN com.netflix.astyanax.impl.RingDescribeHostSupplier - Failed to get hosts from abccorp via ring describe. Will use previously known ring instead
61522 [RingDescribeAutoDiscovery] WARN com.netflix.astyanax.impl.RingDescribeHostSupplier - Failed to get hosts from abccorp via ring describe. Will use previously known ring instead
63080 [main] INFO com.thinkaurelius.titan.diskstorage.util.BackendOperation - Temporary storage exception during backend operation. Attempting backoff retry
com.thinkaurelius.titan.diskstorage.TemporaryStorageException: Temporary failure in storage backend
at com.thinkaurelius.titan.diskstorage.cassandra.astyanax.AstyanaxOrderedKeyColumnValueStore.getNamesSlice(AstyanaxOrderedKeyColumnValueStore.java:138)
at com.thinkaurelius.titan.diskstorage.cassandra.astyanax.AstyanaxOrderedKeyColumnValueStore.getSlice(AstyanaxOrderedKeyColumnValueStore.java:88)
at com.thinkaurelius.titan.graphdb.configuration.KCVSConfiguration$1.call(KCVSConfiguration.java:70)
at com.thinkaurelius.titan.graphdb.configuration.KCVSConfiguration$1.call(KCVSConfiguration.java:64)
at com.thinkaurelius.titan.diskstorage.util.BackendOperation.execute(BackendOperation.java:30)
at com.thinkaurelius.titan.graphdb.configuration.KCVSConfiguration.getConfigurationProperty(KCVSConfiguration.java:64)
at com.thinkaurelius.titan.diskstorage.Backend.initialize(Backend.java:277)
at com.thinkaurelius.titan.graphdb.configuration.GraphDatabaseConfiguration.getBackend(GraphDatabaseConfiguration.java:1174)
at com.thinkaurelius.titan.graphdb.database.StandardTitanGraph.<init>(StandardTitanGraph.java:75)
at com.thinkaurelius.titan.core.TitanFactory.open(TitanFactory.java:40)
at com.thinkaurelius.titan.core.TitanFactory.open(TitanFactory.java:29)
at com.abccorp.grp.graphorm.GraphORM.<init>(GraphORM.java:23)
at com.abccorp.grp.graphorm.GraphORM.getInstance(GraphORM.java:47)
at com.abccorp.grp.utils.dataloader.MainLoader.main(MainLoader.java:150)
Caused by: com.netflix.astyanax.connectionpool.exceptions.NoAvailableHostsException: NoAvailableHostsException: [host=None(0.0.0.0):0, latency=0(0), attempts=0]No hosts to borrow from
at com.netflix.astyanax.connectionpool.impl.RoundRobinExecuteWithFailover.<init>(RoundRobinExecuteWithFailover.java:30)
at com.netflix.astyanax.connectionpool.impl.TokenAwareConnectionPoolImpl.newExecuteWithFailover(TokenAwareConnectionPoolImpl.java:83)
at com.netflix.astyanax.connectionpool.impl.AbstractHostPartitionConnectionPool.executeWithFailover(AbstractHostPartitionConnectionPool.java:256)
at com.netflix.astyanax.thrift.ThriftColumnFamilyQueryImpl$4.execute(ThriftColumnFamilyQueryImpl.java:519)
at com.thinkaurelius.titan.diskstorage.cassandra.astyanax.AstyanaxOrderedKeyColumnValueStore.getNamesSlice(AstyanaxOrderedKeyColumnValueStore.java:136)
... 13 more
91522 [RingDescribeAutoDiscovery] WARN com.netflix.astyanax.impl.RingDescribeHostSupplier - Failed to get hosts from abccorp via ring describe. Will use previously known ring instead
121522 [RingDescribeAutoDiscovery] WARN com.netflix.astyanax.impl.RingDescribeHostSupplier - Failed to get hosts from abccorp via ring describe. Will use previously known ring instead
</code>
非常感谢任何帮助。我正在评估 cassandra 上的 Titan 并且有点坚持，因为之前我在 localhost 上使用 cassandra（相同版本）并且一切都很好。
谢谢
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