java - Cassandra 击落主机重试 (Hector)

Question

有人可以帮助我理解并解决此问题吗？我不知道是什么导致 Hector 在尝试连接到 Cassandra 集群时失败。

如何找出问题所在？

0    [main] INFO  me.prettyprint.cassandra.connection.CassandraHostRetryService  - Downed     Host Retry service started with queue size 10 and retry delay 30s
168  [main] INFO  me.prettyprint.cassandra.service.JmxMonitor  - Registering JMX         me.prettyprint.cassandra.service_keyspace-name:ServiceType=hector,MonitorType=hector
399  [main] INFO  me.prettyprint.cassandra.model.ConfigurableConsistencyLevel  - READ     ConsistencyLevel set to QUORUM for ColumnFamily Files
400  [main] INFO  me.prettyprint.cassandra.model.ConfigurableConsistencyLevel  - WRITE     ConsistencyLevel set to QUORUM for ColumnFamily Files
406  [main] INFO  me.prettyprint.cassandra.model.ConfigurableConsistencyLevel  - READ     ConsistencyLevel set to QUORUM for ColumnFamily FileList
407  [main] INFO  me.prettyprint.cassandra.model.ConfigurableConsistencyLevel  - WRITE ConsistencyLevel set to QUORUM for ColumnFamily FileList

Answer 1

从跟踪来看，您似乎正在使用 QUORUM 作为一致性级别。尝试使用 ONE 看看是否有效。似乎应该满足您的请求的一个或多个节点已关闭。使用 NodeRool Ring/Status 或查看集群中是否有任何节点已关闭。