Question

我正在尝试使用以下代码将Tital连接到此Cassandra：

    TitanGraph graph = TitanFactory.build()
            .set("storage.backend","cassandra")
            .set("storage.hostname","127.0.0.1")
            .open();

但是，我收到错误：

线程“main”中的异常java.lang.IllegalArgumentException：可以没有实例化实现： com.thinkaurelius.titan.diskstorage.cassandra.astyanax.AstyanaxStoreManager 在 com.thinkaurelius.titan.util.system.ConfigurationUtil.instantiate（ConfigurationUtil.java:55）在 com.thinkaurelius.titan.diskstorage.Backend.getImplementationClass（Backend.java:473）在 com.thinkaurelius.titan.diskstorage.Backend.getStorageManager（Backend.java:407）在 com.thinkaurelius.titan.graphdb.configuration.GraphDatabaseConfiguration。（GraphDatabaseConfiguration.java:1320）在 com.thinkaurelius.titan.core.TitanFactory.open（TitanFactory.java:94）在 com.thinkaurelius.titan.core.TitanFactory.open（TitanFactory.java:84）在 com.thinkaurelius.titan.core.TitanFactory $ Builder.open（TitanFactory.java:139）在com.txtstreet.bucket.TitanExample.main（TitanExample.java:59）引起：java.lang.reflect.InvocationTargetException at sun.reflect.NativeConstructorAccessorImpl.newInstance0（本机方法）在 sun.reflect.NativeConstructorAccessorImpl.newInstance（NativeConstructorAccessorImpl.java:62）在 sun.reflect.DelegatingConstructorAccessorImpl.newInstance（DelegatingConstructorAccessorImpl.java:45） at java.lang.reflect.Constructor.newInstance（Constructor.java:423）在 com.thinkaurelius.titan.util.system.ConfigurationUtil.instantiate（ConfigurationUtil.java:44） ... 7更多引起： com.thinkaurelius.titan.diskstorage.TemporaryBackendException：存储后端的临时故障 com.thinkaurelius.titan.diskstorage.cassandra.astyanax.AstyanaxStoreManager.ensureKeyspaceExists（AstyanaxStoreManager.java:572）在 com.thinkaurelius.titan.diskstorage.cassandra.astyanax.AstyanaxStoreManager。（AstyanaxStoreManager.java:291） ... 12更多引起： com.netflix.astyanax.connectionpool.exceptions.PoolTimeoutException： PoolTimeoutException：[host = 127.0.0.1（127.0.0.1）：9160， latency = 10003（10003），attempts = 1]等待连接超时 com.netflix.astyanax.connectionpool.impl.SimpleHostConnectionPool.waitForConnection（SimpleHostConnectionPool.java:231）在 com.netflix.astyanax.connectionpool.impl.SimpleHostConnectionPool.borrowConnection（SimpleHostConnectionPool.java:198）在 com.netflix.astyanax.connectionpool.impl.RoundRobinExecuteWithFailover.borrowConnection（RoundRobinExecuteWithFailover.java:84）在 com.netflix.astyanax.connectionpool.impl.AbstractExecuteWithFailoverImpl.tryOperation（AbstractExecuteWithFailoverImpl.java:117）在 com.netflix.astyanax.connectionpool.impl.AbstractHostPartitionConnectionPool.executeWithFailover（AbstractHostPartitionConnectionPool.java:352）在 com.netflix.astyanax.thrift.ThriftClusterImpl.executeSchemaChangeOperation（ThriftClusterImpl.java:146）在 com.netflix.astyanax.thrift.ThriftClusterImpl.internalCreateKeyspace（ThriftClusterImpl.java:321）在 com.netflix.astyanax.thrift.ThriftClusterImpl.addKeyspace（ThriftClusterImpl.java:294）在 com.thinkaurelius.titan.diskstorage.cassandra.astyanax.AstyanaxStoreManager.ensureKeyspaceExists（AstyanaxStoreManager.java:567） ......还有13个

Answer 1

启用Cassandra的Thrift服务器

使用以下命令启用thrift

nodetool enablethrift

泰坦无法连接到卡桑德拉

1 个答案: