Cassandra Complete Initialisation

[Nigel LEACH <ni...@uk.bnpparibas.com>]

I have a crash and burn cluster, used for all sorts of integration testing (DataStax 2.0.2, five nodes, 8GB heap, two seeds, vnodes, RF 2). I wanted to completely initialise/refresh my environment, so did something like this (can't be sure something else did not slip in too),

*Removed all user keyspaces 
*Standard shutdown of Cassandra on all nodes
*Deleted all files in saved_caches_directory, data_file_directories, commitlog_directory
*Rebooted all five nodes

Now, I can usually start Cassandra on the first seed, but not anywhere else. There are various errors, but the first, and most prevalent, seem to be 

Loading persisted ring state
ERROR 09:55:36,660 Exception encountered during startup
java.lang.ExceptionInInitializerError
...
Caused by: java.lang.NullPointerException
...
java.lang.ExceptionInInitializerError
...
Exception encountered during startup: null
ERROR 09:55:36,675 Exception in thread Thread[StorageServiceShutdownHook,5,main]
java.lang.ExceptionInInitializerError

Any idea how to get my zapped cluster back up again, and in future how best to fully initialise a Cluster.

I don't want any data, or settings, form the original cluster, although the more settings I can keep, the better, just from the perspective of work involved to creat a clean environmnet.

Many Thanks
Nigel



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