Cassandra关闭的主机重试(Hector)

Question

是否有人可以帮助我了解此问题并进行故障排除？我不知道是什么原因导致Hector在尝试连接到Cassandra集群时失败。

我如何才能找出问题所在？

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。试着使用一个，看看它是否有效。应该满足您的请求的一个或多个节点似乎已关闭。使用noderool ring/status或查看集群中是否有节点关闭。