http://wiki.apache.org/cassandra/DistributedDeletes
>From the http://wiki.apache.org/cassandra/StorageConfiguration page: > Achtung! Changing this parameter requires wiping your data directories, > since the partitioner can modify the !sstable on-disk format. So delete your data and commit log dirs after shutting down Cassandra... On Tue, Oct 19, 2010 at 4:09 PM, Wicked J <wickedj2...@gmail.com> wrote: > Hi, > I deleted all the data (programmatically). Then I changed the partitioner > from RandomPartitioner to OrderPreservingPartitioner and when I started > Cassandra - I get the following error. What is the correct way of changing > the partitioner and how can I get past this error? > > ERROR 17:28:28,985 Fatal exception during initialization > java.io.IOException: Found system table files, but they couldn't be loaded. > Did you change the partitioner? > at > org.apache.cassandra.db.SystemTable.checkHealth(SystemTable.java:154) > at > org.apache.cassandra.thrift.CassandraDaemon.setup(CassandraDaemon.java:94) > at > org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:211) > > Thanks!
