将新节点加入Cassandra群集需要多长时间？

我有一台Cassandra 1.0.9服务器，它被设置为集群的种子。它有大约34gb的数据。我正试图加入第二个卡桑德拉1.0.9的戒指，并有第一个设置为种子

在/var/lib/cassandra/log/cassandra.log中，我看到：

INFO 20:06:52,809 JOINING: waiting for schema information to complete
INFO 20:07:22,815 JOINING: waiting for schema information to complete
INFO 20:07:52,817 JOINING: waiting for schema information to complete
.
.
.
INFO 20:10:22,839 JOINING: waiting for schema information to complete
INFO 20:10:52,841 JOINING: waiting for schema information to complete
INFO 20:11:22,847 JOINING: waiting for schema information to complete

INFO [main] 2012-09-11 20:19:52,913 StorageService.java (line 668) JOINING: waiting for schema information to complete
INFO [main] 2012-09-11 20:20:22,919 StorageService.java (line 668) JOINING: waiting for schema information to complete
INFO [main] 2012-09-11 20:20:52,921 StorageService.java (line 668) JOINING: waiting for schema information to complete
.
.
.
INFO [main] 2012-09-11 20:23:22,943 StorageService.java (line 668) JOINING: waiting for schema information to complete
INFO [main] 2012-09-11 20:23:52,945 StorageService.java (line 668) JOINING: waiting for schema information to complete
INFO [main] 2012-09-11 20:24:22,951 StorageService.java (line 668) JOINING: waiting for schema information to complete

在/var/log/cassandra/system log中，我看到：

INFO 20:06:52,809 JOINING: waiting for schema information to complete
INFO 20:07:22,815 JOINING: waiting for schema information to complete
INFO 20:07:52,817 JOINING: waiting for schema information to complete
.
.
.
INFO 20:10:22,839 JOINING: waiting for schema information to complete
INFO 20:10:52,841 JOINING: waiting for schema information to complete
INFO 20:11:22,847 JOINING: waiting for schema information to complete

INFO [main] 2012-09-11 20:19:52,913 StorageService.java (line 668) JOINING: waiting for schema information to complete
INFO [main] 2012-09-11 20:20:22,919 StorageService.java (line 668) JOINING: waiting for schema information to complete
INFO [main] 2012-09-11 20:20:52,921 StorageService.java (line 668) JOINING: waiting for schema information to complete
.
.
.
INFO [main] 2012-09-11 20:23:22,943 StorageService.java (line 668) JOINING: waiting for schema information to complete
INFO [main] 2012-09-11 20:23:52,945 StorageService.java (line 668) JOINING: waiting for schema information to complete
INFO [main] 2012-09-11 20:24:22,951 StorageService.java (line 668) JOINING: waiting for schema information to complete

运行netstats会让我：

Mode: JOINING
Not sending any streams.
Not receiving any streams.
Pool Name                    Active   Pending      Completed
Commands                        n/a         0              5
Responses                       n/a         0          51966

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知道这需要多长时间吗？

接收铃声信息只需要几秒钟

识别问题的最佳方法是在两台主机上的log4j-server.properties中打开调试日志记录

我猜其中一台主机无法连接到存储端口（7000或7001）上的另一台主机。可能有不同的原因：主机名错误配置、防火墙、ssl错误配置等。请尝试执行

nodetool -h <hostname> ring

nodetool-h环

命令，然后重试

telnet <hostname> 7000

telnet 7000

从每个主机到另一个主机。确保您使用的主机名来自nodetool的输出

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如果两个连接都正常工作，请尝试打开调试日志记录。

我似乎已通过以下步骤解决了此问题：

在新服务器上删除/var/lib/cassandra/data目录（和子目录）

删除种子服务器上的/var/lib/cassandra/data/system/Schema*文件

删除种子服务器上的/var/lib/cassandra/data/system/Migration*文件

在cassandra cli中的种子服务器上重新创建架构

在新服务器上启动Cassandra

现在我在环中看到了新服务器，尽管它仍然在加入（在以前的加入尝试中它没有出现在环中）。正如在cassandra cli中运行“descripe cluster；”所述，种子服务器和新服务器都位于同一架构上

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我希望这对以后的其他人有所帮助。

请注意，

nc

通常是一种比

telnet

更容易用于测试连接的工具。特别是，您可以使用Ctrl-C快速停止它。（

nc-v 7000

）。它还支持代理和UDP！