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我正在使用泰坦0.54和Cassandra 2.1.6。泰坦後端連接異常
我寫了一個Java程序，它是能夠連接到Titan和運行我的本地卡桑德拉集羣上的工作負載。當我嘗試在運行相同的軟件在另一臺機器（有自己的集羣）我得到以下（含storage.backend設置爲「cassandrathrift」）的錯誤：
Exception in thread "main" com.thinkaurelius.titan.core.TitanException: Could not execute operation due to backend exception
at com.thinkaurelius.titan.diskstorage.util.BackendOperation.execute(BackendOperation.java:44)
at com.thinkaurelius.titan.diskstorage.util.BackendOperation.execute(BackendOperation.java:144)
at com.thinkaurelius.titan.diskstorage.configuration.backend.KCVSConfiguration.get(KCVSConfiguration.java:92)
at com.thinkaurelius.titan.diskstorage.configuration.BasicConfiguration.isFrozen(BasicConfiguration.java:93)
at com.thinkaurelius.titan.graphdb.configuration.GraphDatabaseConfiguration.<init>(GraphDatabaseConfiguration.java:1289)
at com.thinkaurelius.titan.core.TitanFactory.open(TitanFactory.java:93)
at com.thinkaurelius.titan.core.TitanFactory$Builder.open(TitanFactory.java:134)
at com.x.tweetgraph.writer.graph.TitanConnector.getConnection(TitanConnector.java:17)
at com.x.tweetgraph.writer.graph.GraphManager.loadGraph(GraphManager.java:186)
at com.x.tweetgraph.writer.graph.GraphManager.init(GraphManager.java:99)
at com.x.tweetgraph.writer.graph.Main.main(Main.java:26)
Caused by: com.thinkaurelius.titan.diskstorage.PermanentBackendException: Permanent failure in storage backend
at com.thinkaurelius.titan.diskstorage.cassandra.thrift.CassandraThriftKeyColumnValueStore.convertException(CassandraThriftKeyColumnValueStore.java:249)
at com.thinkaurelius.titan.diskstorage.cassandra.thrift.CassandraThriftKeyColumnValueStore.getNamesSlice(CassandraThriftKeyColumnValueStore.java:148)
at com.thinkaurelius.titan.diskstorage.cassandra.thrift.CassandraThriftKeyColumnValueStore.getNamesSlice(CassandraThriftKeyColumnValueStore.java:91)
at com.thinkaurelius.titan.diskstorage.cassandra.thrift.CassandraThriftKeyColumnValueStore.getSlice(CassandraThriftKeyColumnValueStore.java:80)
at com.thinkaurelius.titan.diskstorage.configuration.backend.KCVSConfiguration$1.call(KCVSConfiguration.java:95)
at com.thinkaurelius.titan.diskstorage.configuration.backend.KCVSConfiguration$1.call(KCVSConfiguration.java:92)
at com.thinkaurelius.titan.diskstorage.util.BackendOperation.execute(BackendOperation.java:133)
at com.thinkaurelius.titan.diskstorage.util.BackendOperation$1.call(BackendOperation.java:147)
at com.thinkaurelius.titan.diskstorage.util.BackendOperation.executeDirect(BackendOperation.java:56)
at com.thinkaurelius.titan.diskstorage.util.BackendOperation.execute(BackendOperation.java:42)
... 10 more
Caused by: TimedOutException()
at org.apache.cassandra.thrift.Cassandra$multiget_slice_result$multiget_slice_resultStandardScheme.read(Cassandra.java:14696)
at org.apache.cassandra.thrift.Cassandra$multiget_slice_result$multiget_slice_resultStandardScheme.read(Cassandra.java:14633)
at org.apache.cassandra.thrift.Cassandra$multiget_slice_result.read(Cassandra.java:14559)
at org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:78)
at org.apache.cassandra.thrift.Cassandra$Client.recv_multiget_slice(Cassandra.java:741)
at org.apache.cassandra.thrift.Cassandra$Client.multiget_slice(Cassandra.java:725)
at com.thinkaurelius.titan.diskstorage.cassandra.thrift.CassandraThriftKeyColumnValueStore.getNamesSlice(CassandraThriftKeyColumnValueStore.java:129)
... 18 more
隨着storage.backend設置爲「卡桑德拉「我得到如下：
Caused by: TimedOutException()
at org.apache.cassandra.thrift.Cassandra$multiget_slice_result$multiget_slice_resultStandardScheme.read(Cassandra.java:14696)
at org.apache.cassandra.thrift.Cassandra$multiget_slice_result$multiget_slice_resultStandardScheme.read(Cassandra.java:14633)
at org.apache.cassandra.thrift.Cassandra$multiget_slice_result.read(Cassandra.java:14559)
at org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:78)
at org.apache.cassandra.thrift.Cassandra$Client.recv_multiget_slice(Cassandra.java:741)
at org.apache.cassandra.thrift.Cassandra$Client.multiget_slice(Cassandra.java:725)
at com.netflix.astyanax.thrift.ThriftColumnFamilyQueryImpl$4$1.internalExecute(ThriftColumnFamilyQueryImpl.java:533)
at com.netflix.astyanax.thrift.ThriftColumnFamilyQueryImpl$4$1.internalExecute(ThriftColumnFamilyQueryImpl.java:530)
at com.netflix.astyanax.thrift.AbstractOperationImpl.execute(AbstractOperationImpl.java:60)
... 24 more
兩個選項都在我的本地設置工作（單節點集羣卡桑德拉）。從cassandra.yaml：
listen_address: 136.225.5.31
start_native_transport: true
native_transport_port: 12742
start_rpc: true
rpc_address: 136.225.5.31
rpc_port: 12760
我試圖連接到安裝程序是一個三節點羣集：
listen_interface: eth1
start_native_transport: true
native_transport_port: 12742
start_rpc: true
rpc_interface: eth1
rpc_port: 12760
在第一次設置我得到使用rpc_address + rpc_port泰坦連接，但當我在第二個設置上嘗試時，我得到上面的錯誤。
我需要使用不同的設置不是節點IP爲storage.hostname佔RPC_INTERFACE被指定的，而不是rpc_address在第二準備？或者問題是什麼？
我可以使用cqlsh（並與其他軟件，我已經寫了）連接到第二組，所以它不是與集羣的問題。
防火牆規則？你可以telnet到端口嗎？ – phact