将新DC添加到3节点群集。现有3个节点中的数据非常小，为10GB。 执行以下步骤以添加新DC。
1) Updated new cluster config with following Cassandra.yml parameter
a. Auto_bootstrap: false
b. Seeds: - Matched the seeds with the current seed config.
2) Started the new cluster
3) Update the keyspace in DC to add the new DC
a. ALTER KEYSPACE "temp" WITH REPLICATION = {'class' : 'NetworkTopologyStrategy', 'clu-1':3, 'newclu-1' : 3};
4) Started “nodetool rebuild --- my_cluster” in all nodes at the new DC.
我错过了任何步骤。原因是集群停止发送数据。我在所有节点上看到以下行。
INFO [STREAM-IN-/] 2017-05-24 18:36:26,337 StreamResultFuture.java:212 - [Stream #e482eed0-40af-11e7-8d18-21388e2034a2] All sessions completed
但是当我做＆＃34; nodetool netstats＆＃34;。重建仍在运行。
Mode: NORMAL
Rebuild d4f4d160-40b2-11e7-87d8-ed7164988f34
Read Repair Statistics:
Attempted: 300
Mismatch (Blocking): 0
Mismatch (Background): 0
Pool Name Active Pending Completed
Commands n/a 0 218172
Responses n/a 0 921087
即使新节点上的nodetool状态只显示几MB数据而不是10GB。