如何重命名Cassandra中的键空间？
问题描述：
如何通过cassandra-cli重命名一个活的Cassandra键空间？先前版本在cassandra-cli（重命名键空间）中有一个选项。
How do you rename a live Cassandra keyspace through the cassandra-cli? Previous versions had an option in cassandra-cli ("rename keyspace"). However, that option has been dropped in recent releases.
答
不再支持重命名键空间（和列族），因为它不再支持容易发生种族条件。请参见 https://issues.apache.org/jira/browse/CASSANDRA-1585 。
Renaming keyspaces (and column families) is no longer supported, since it was prone to race conditions. See https://issues.apache.org/jira/browse/CASSANDRA-1585.