我的本地计算机上有一个带有修改主机的Cassandra 1.2群集:
#cassandra nodes
m.y.i.p m.y.i.p (Node 1)<---- seed 1
m.y.i.p 127.0.0.3 (Node 2)
m.y.i.p 127.0.0.4 (Node 3)<---- seed 2
m.y.i.p 127.0.0.5 (Node 4)
m.y.i.p 127.0.0.6 (Node 5)
...所以群集总共有5个节点。我正在使用虚拟节点,所以我不想在任何地方设置initial_token。
我遵循的步骤:
问题出在第4步,当我尝试加入Node 5时,Cassandra抛出了这个异常:
java.lang.IllegalStateException: unable to find sufficient sources for streaming range (-7204018021044318047,-6965052533844316617]
at org.apache.cassandra.dht.RangeStreamer.getRangeFetchMap(RangeStreamer.java:205)
at org.apache.cassandra.dht.RangeStreamer.addRanges(RangeStreamer.java:129)
at org.apache.cassandra.dht.BootStrapper.bootstrap(BootStrapper.java:81)
at org.apache.cassandra.service.StorageService.bootstrap(StorageService.java:890)
at org.apache.cassandra.service.StorageService.joinTokenRing(StorageService.java:659)
at org.apache.cassandra.service.StorageService.initServer(StorageService.java:514)
at org.apache.cassandra.service.StorageService.initServer(StorageService.java:411)
at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:278)
at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:366)
at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:409)
java.lang.IllegalStateException: unable to find sufficient sources for streaming range (-7204018021044318047,-6965052533844316617]
at org.apache.cassandra.dht.RangeStreamer.getRangeFetchMap(RangeStreamer.java:205)
at org.apache.cassandra.dht.RangeStreamer.addRanges(RangeStreamer.java:129)
at org.apache.cassandra.dht.BootStrapper.bootstrap(BootStrapper.java:81)
at org.apache.cassandra.service.StorageService.bootstrap(StorageService.java:890)
at org.apache.cassandra.service.StorageService.joinTokenRing(StorageService.java:659)
at org.apache.cassandra.service.StorageService.initServer(StorageService.java:514)
at org.apache.cassandra.service.StorageService.initServer(StorageService.java:411)
at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:278)
at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:366)
at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:409)
Exception encountered during startup: unable to find sufficient sources for streaming range (-7204018021044318047,-6965052533844316617]
ERROR 16:55:47,634 Exception in thread Thread[StorageServiceShutdownHook,5,main]
java.lang.NullPointerException
at org.apache.cassandra.service.StorageService.stopRPCServer(StorageService.java:321)
at org.apache.cassandra.service.StorageService$1.runMayThrow(StorageService.java:479)
at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28)
at java.lang.Thread.run(Thread.java:722)
范围(-7204018021044318047,-6965052533844316617)只属于死亡节点(节点3)。由于我使用虚拟节点,我认为环必须重新平衡:
添加或删除节点时不再需要重新平衡群集。当节点加入时 在群集中,它承担来自群集中其他节点的偶数部分数据的责任。如果是一个节点 失败,负载均匀地分布在集群中的其他节点上。
但我错了,显然:)。
当前一个节点关闭时,如何在现有群集中加入新节点?请注意,我每个节点有256个令牌,nodetool move不是一个选项(我认为)。
提前感谢您,欢迎提供任何信息!
答案 0 :(得分:0)
解决方案是手动从令牌中删除节点3(已关闭)。