UnavailableException means the node(s) with the requested data are down. A sub-case of this is when no nodes at all are known, which may be what you are seeing.
On Sat, Jul 17, 2010 at 10:00 PM, Mubarak Seyed <mubarak.se...@gmail.com> wrote: > I am trying to load data using contrib/client_only/ClientOnlyExample.java to > write mutations using > StorageProxy.mutate(). > When i run the ClientOnlyExample.class with write option against single node > server, it prints as if key has written, and shutting down the message > service, i had to kill the JVM (as documented) > When i try to read data using same key values, i am getting > 19:54:01,618 DEBUG DatabaseDescriptor:213 - Syncing log with a period of > 10000 > 19:54:01,624 INFO DatabaseDescriptor:229 - Auto DiskAccessMode determined > to be mmap > 19:54:01,772 DEBUG DatabaseDescriptor:401 - setting autoBootstrap to false > 19:54:02,292 DEBUG StorageProxy:347 - weakreadremote reading > SliceByNamesReadCommand(table='Keyspace1', key='key0', > columnParent='QueryPath(columnFamilyName='Standard1', > superColumnName='null', columnName='null')', columns=[636f6c62,]) > Exception in thread "main" java.lang.RuntimeException: > UnavailableException() > at ClientOnlyExample.testReading(ClientOnlyExample.java:118) > at ClientOnlyExample.main(ClientOnlyExample.java:156) > Caused by: UnavailableException() > at > org.apache.cassandra.service.StorageService.findSuitableEndPoint(StorageService.java:1203) > at > org.apache.cassandra.service.StorageProxy.weakReadRemote(StorageProxy.java:354) > at > org.apache.cassandra.service.StorageProxy.readProtocol(StorageProxy.java:409) > at ClientOnlyExample.testReading(ClientOnlyExample.java:102) > ... 1 more > How can i make sure that StorageProxy.mutate(List<RowMutation>) works fine? > -- > Thanks, > Mubarak Seyed. > -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of Riptano, the source for professional Cassandra support http://riptano.com
