Cassandra 从1.2.19到2.0.15的滚动升级

我们有3个数据中心，每个中心有12个cassandra节点。目前的卡桑德拉版本是1.2.19。我们想迁移到Cassandra 2.0.15。我们不能完全停机，我们需要进行滚动升级。作为初步检查，我们做了两个实验：

实验1

创建了一个新的2.0.15节点，并尝试以现有节点10%的令牌间隔将其引导到集群中。 节点无法通过生成“java.lang.RuntimeException:无法使用任何种子”加入群集

实验2

在集群中添加了一个1.2.19节点，其令牌间隔为现有节点的10%

当节点启动时，我们将其停止并升级到2.0.15，然后再次启动（轻微停机）。这一次，节点加入了集群并开始正确地服务请求

为了检查它在较重负载下的行为，我们尝试将令牌移动到普通节点的15%。不幸的是 移动操作失败，出现以下异常：

问题 问题1。卡桑德拉2.0.15没有像在实验1中那样引导到1.2.19集群，这正常吗？（在这里，我的意思是，它可能不是设计的工作）
问题2。移动令牌操作是否适用于在1.2.19集群中运行的Cassandra 2.0.15节点？
第三季度。在我们的情况下，是否有适当的滚动升级的解决方法/建议？

    CassandraDaemon.java (line 584) Exception encountered during startup
    java.lang.RuntimeException: Unable to gossip with any seeds
            at org.apache.cassandra.gms.Gossiper.doShadowRound(Gossiper.java:1296)
            at org.apache.cassandra.service.StorageService.checkForEndpointCollision(StorageService.java:457)
            at org.apache.cassandra.service.StorageService.prepareToJoin(StorageService.java:671)
            at org.apache.cassandra.service.StorageService.initServer(StorageService.java:623)
            at org.apache.cassandra.service.StorageService.initServer(StorageService.java:515)
            at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:437)
            at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:567)
            at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:656)

    INFO [RMI TCP Connection(1424)-192.168.1.100] 2015-07-10 11:37:05,235 StorageService.java (line 982) MOVING: fetching new ranges and streaming old ranges
     INFO [RMI TCP Connection(1424)-192.168.1.100] 2015-07-10 11:37:05,262 StreamResultFuture.java (line 87) [Stream #fc3f4290-26f7-11e5-9988-afe392008597] Executing streaming plan for Moving
     INFO [RMI TCP Connection(1424)-192.168.1.100] 2015-07-10 11:37:05,262 StreamResultFuture.java (line 91) [Stream #fc3f4290-26f7-11e5-9988-afe392008597] Beginning stream session with /192.168.1.101
     INFO [StreamConnectionEstablisher:1] 2015-07-10 11:37:05,263 StreamSession.java (line 218) [Stream #fc3f4290-26f7-11e5-9988-afe392008597] Starting streaming to /192.168.1.101
     INFO [StreamConnectionEstablisher:1] 2015-07-10 11:37:05,274 StreamResultFuture.java (line 173) [Stream #fc3f4290-26f7-11e5-9988-afe392008597] Prepare completed. Receiving 0 files(0 bytes), sending 112 fi
    les(6538607891 bytes)
    ERROR [STREAM-IN-/192.168.1.101] 2015-07-10 11:37:05,303 StreamSession.java (line 467) [Stream #fc3f4290-26f7-11e5-9988-afe392008597] Streaming error occurred
    java.io.IOException: Connection reset by peer
            at sun.nio.ch.FileDispatcherImpl.read0(Native Method)
            at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39)
            at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)
            at sun.nio.ch.IOUtil.read(IOUtil.java:197)
            at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:384)
            at org.apache.cassandra.streaming.messages.StreamMessage.deserialize(StreamMessage.java:51)
            at org.apache.cassandra.streaming.ConnectionHandler$IncomingMessageHandler.run(ConnectionHandler.java:239)
            at java.lang.Thread.run(Thread.java:745)
    ERROR [STREAM-OUT-/192.168.1.101] 2015-07-10 11:37:05,312 StreamSession.java (line 467) [Stream #fc3f4290-26f7-11e5-9988-afe392008597] Streaming error occurred
    java.io.IOException: Connection reset by peer
            at sun.nio.ch.FileDispatcherImpl.write0(Native Method)
            at sun.nio.ch.SocketDispatcher.write(SocketDi