Question

有人可以协助我理解和解决此问题吗？我不知道当Hector尝试连接到Cassandra集群时导致Hector失败的原因。

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

从跟踪中看来，您使用QUORUM作为一致性级别。尝试使用ONE并查看它是否有效。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或查看群集中是否有任何节点已关闭。

卡桑德拉拒绝主机重审（赫克托耳）

1 个答案: