You should take a look at http://wiki.apache.org/cassandra/LiveSchemaUpdates
loadSchemaFromYaml() is intended to initialize the schema on a seed node in a new cluster (or one that has been upgraded from 0.6). It is an operation that should only be performed one time *per cluster.* Gary On Wed, Aug 11, 2010 at 20:56, Mark <static.void....@gmail.com> wrote: > How is this accomplished? > > I tried using the > org.apache.cassandra.service.StorageService.loadSchemaFromYAML() method but > I am receiving the following error. > > java.util.concurrent.ExecutionException: > org.apache.cassandra.config.ConfigurationException: Cannot load from XML on > top of pre-existing schemas. > at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222) > at java.util.concurrent.FutureTask.get(FutureTask.java:83) > at > org.apache.cassandra.concurrent.DebuggableThreadPoolExecutor.afterExecute(DebuggableThreadPoolExecutor.java:87) > at > java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:888) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) > at java.lang.Thread.run(Thread.java:637) > > Thanks again >
