Я использую Titan 0.5.0 с Cassandra 2.0.8.
Когда я впервые запустил свой Java-клиент с локальной Titan-Cassandra, я смог подключиться к нему. Теперь, когда я удаленно развернул Titan-Cassandra на Debian Wheezy с выделенным пользователем, у меня появилось «Исключение отказа в подключении» (см. Стек ниже). Я могу подключиться к Титану через Rexter на удаленном сервере через http://my-domain.com:8182 и я могу видеть свои вершины и ребра.
Какие изменения нужно внести в локальную конфигурацию (клиент Java и Titan на одном компьютере), чтобы запустить Titan с Cassandra и Elasticsearch на удаленном компьютере, к которому обращается мой клиент Java?
Java-код клиента
private final URL titanConfiguration =TitanRepository.class.getResource("/conf/titan-cassandra.properties");
public TitanGraph load() {
return TitanFactory.open(titanConfiguration.getPath());
}
Рабочая конфигурация с локальной версией Titan-Cassandra:
Конфигурация Java titan-cassandra.properties
storage.backend=cassandrathrift
storage.hostname=127.0.0.1
cache.db-cache = true
cache.db-cache-clean-wait = 20
cache.db-cache-time = 180000
cache.db-cache-size = 0.5
index.search.backend=elasticsearch
index.search.hostname=127.0.0.1
index.search.client-only=true
schema.default=none
Никаких изменений в каталоге Titan conf
НЕ работает конфигурация Java с Titan-Cassandra на удаленном сервере
Конфигурация Java titan-cassandra.properties
storage.backend=cassandrathrift
storage.hostname=192.168.1.20 <<< OR http://my-domain.com
cache.db-cache = true
cache.db-cache-clean-wait = 20
cache.db-cache-time = 180000
cache.db-cache-size = 0.5
index.search.backend=elasticsearch
index.search.hostname=192.168.1.20 <<< OR http://my-domain.com
index.search.client-only=true
schema.default=none
изменения в директории Titan conf
- rexster-cassandra-es.xml:
<base-uri>http://my-domain.com</base-uri>
<index.search.hostname>192.168.1.20</index.search.hostname>
Трассировки стека
java.lang.IllegalArgumentException: Could not instantiate implementation: com.thinkaurelius.titan.diskstorage.cassandra.thrift.CassandraThriftStoreManager
at com.thinkaurelius.titan.util.system.ConfigurationUtil.instantiate(ConfigurationUtil.java:55)
at com.thinkaurelius.titan.diskstorage.Backend.getImplementationClass(Backend.java:425)
at com.thinkaurelius.titan.diskstorage.Backend.getStorageManager(Backend.java:366)
at com.thinkaurelius.titan.graphdb.configuration.GraphDatabaseConfiguration.<init>(GraphDatabaseConfiguration.java:1208)
at com.thinkaurelius.titan.core.TitanFactory.open(TitanFactory.java:92)
at com.thinkaurelius.titan.core.TitanFactory.open(TitanFactory.java:60)
at be.jiliant.spotmydate.server.TitanRepository.load(TitanRepository.java:30)
at be.jiliant.spotmydate.server.persist.processor.PersistProcessor.process(PersistProcessor.java:38)
at org.apache.camel.processor.DelegateSyncProcessor.process(DelegateSyncProcessor.java:63)
at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:72)
at org.apache.camel.processor.interceptor.TraceInterceptor.process(TraceInterceptor.java:163)
at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:398)
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:118)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:80)
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:105)
at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:87)
at org.apache.camel.component.jms.EndpointMessageListener.onMessage(EndpointMessageListener.java:103)
at org.springframework.jms.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:685)
at org.springframework.jms.listener.AbstractMessageListenerContainer.invokeListener(AbstractMessageListenerContainer.java:623)
at org.springframework.jms.listener.AbstractMessageListenerContainer.doExecuteListener(AbstractMessageListenerContainer.java:591)
at org.springframework.jms.listener.AbstractPollingMessageListenerContainer.doReceiveAndExecute(AbstractPollingMessageListenerContainer.java:308)
at org.springframework.jms.listener.AbstractPollingMessageListenerContainer.receiveAndExecute(AbstractPollingMessageListenerContainer.java:246)
at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.invokeListener(DefaultMessageListenerContainer.java:1142)
at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.executeOngoingLoop(DefaultMessageListenerContainer.java:1134)
at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.run(DefaultMessageListenerContainer.java:1031)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.reflect.InvocationTargetException: null
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at com.thinkaurelius.titan.util.system.ConfigurationUtil.instantiate(ConfigurationUtil.java:44)
... 29 common frames omitted
Caused by: com.thinkaurelius.titan.diskstorage.TemporaryBackendException: Temporary failure in storage backend
at com.thinkaurelius.titan.diskstorage.cassandra.thrift.CassandraThriftStoreManager.getCassandraPartitioner(CassandraThriftStoreManager.java:218)
at com.thinkaurelius.titan.diskstorage.cassandra.thrift.CassandraThriftStoreManager.<init>(CassandraThriftStoreManager.java:196)
... 34 common frames omitted
Caused by: org.apache.thrift.transport.TTransportException: java.net.ConnectException: Connection refused
at org.apache.thrift.transport.TSocket.open(TSocket.java:185)
at org.apache.thrift.transport.TFramedTransport.open(TFramedTransport.java:81)
at com.thinkaurelius.titan.diskstorage.cassandra.thrift.thriftpool.CTConnectionFactory.makeRawConnection(CTConnectionFactory.java:87)
at com.thinkaurelius.titan.diskstorage.cassandra.thrift.thriftpool.CTConnectionFactory.makeObject(CTConnectionFactory.java:52)
at com.thinkaurelius.titan.diskstorage.cassandra.thrift.thriftpool.CTConnectionFactory.makeObject(CTConnectionFactory.java:21)
at org.apache.commons.pool.impl.GenericKeyedObjectPool.borrowObject(GenericKeyedObjectPool.java:1220)
at com.thinkaurelius.titan.diskstorage.cassandra.thrift.CassandraThriftStoreManager.getCassandraPartitioner(CassandraThriftStoreManager.java:215)
... 35 common frames omitted
Caused by: java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:579)
at org.apache.thrift.transport.TSocket.open(TSocket.java:180)
... 41 common frames omitted
