I was using single node and was running ClientOnlyExample from the same machines, heard from word_count README that i can use its storage-conf.xml to alias localhost to 127.0.0.2 and ListenAddress can be 127.0.0.2 and seed can be 127.0.0.1.
Looks like ClientOnlyExample starts itself up as Read-Only node and hence can't write, is it true? I tried starting node from bin/cassandra (it did with bind to Thrift Address 127.0.0.2:9160) but ClientOnlyExample errors out as BindException as port already in use. Is there any documented procedure to start the ClientOnlyExample as Read-Only node and write/read the data. The README of word_count says about how-to create lo2 (127.0.0.2) with the ListenAddress and ThriftAddress. I tried with contrib/word_count/storage-conf.xml but no luck. Can someone please help me running the ClientOnlyExample using ReadOnlyNode and 127.0.0.2 alias? Thanks, Mubarak On Sun, Jul 18, 2010 at 5:42 AM, Jonathan Ellis <jbel...@gmail.com> wrote: > 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 > -- Thanks, Mubarak Seyed.
