An you can never go wrong relying on the documentation for the python pycassa library, it has some handy tutorials for getting started.
http://pycassa.github.com/pycassa/ cheers ----------------- Aaron Morton Freelance Cassandra Developer New Zealand @aaronmorton http://www.thelastpickle.com On 18/02/2013, at 9:51 PM, Abhijit Chanda <abhijit.chan...@gmail.com> wrote: > I hope you have already gone through this link > https://github.com/zznate/hector-examples. If not will suggest you to go > through, and you can also refer > http://hector-client.github.com/hector/build/html/documentation.html. > > > Best Regards, > > > On Mon, Feb 18, 2013 at 12:15 AM, Jain Rahul <ja...@ivycomptech.com> wrote: > Thanks Edward, > > My Bad. I was confused as It does seems to create keyspace also, As I > understand (although i'm not sure) > > List<CfDef> cfDefList = new ArrayList<CfDef>(); > CfDef columnFamily = new CfDef(KEYSPACE, COLUMN_FAMILY); > cfDefList.add(columnFamily); > try > { > client.system_add_keyspace(new KsDef(KEYSPACE, > "org.apache.cassandra.locator.SimpleStrategy", 1, cfDefList)); > int magnitude = client.describe_ring(KEYSPACE).size(); > > Can I request you to please point me to some examples with I can start. I try > to see some example from hector but it does seems to be in-line with > Cassandra's 1.1 version. > > Regards, > Rahul > > > -----Original Message----- > From: Edward Capriolo [mailto:edlinuxg...@gmail.com] > Sent: 17 February 2013 21:49 > To: user@cassandra.apache.org > Subject: Re: NPE in running "ClientOnlyExample" > > This is a bad example to follow. This is the internal client the Cassandra > nodes use to talk to each other (fat client) usually you do not use this > unless you want to write some embedded code on the Cassandra server. > > Typically clients use thrift/native transport. But you are likely getting the > error you are seeing because the keyspace or column family is not created yet. > > On Sat, Feb 16, 2013 at 11:41 PM, Jain Rahul <ja...@ivycomptech.com> wrote: > > Hi All, > > > > > > > > I am newbie to Cassandra and trying to run an example program > > "ClientOnlyExample" taken from > > https://raw.github.com/apache/cassandra/cassandra-1.2/examples/client_only/src/ClientOnlyExample.java. > > But while executing the program it gives me a null pointer exception. > > Can you guys please help me out what I am missing. > > > > > > > > I am using Cassandra 1.2.1 version. I have pasted the logs at > > http://pastebin.com/pmADWCYe > > > > > > > > Exception in thread "main" java.lang.NullPointerException > > > > at > > org.apache.cassandra.db.ColumnFamily.create(ColumnFamily.java:71) > > > > at > > org.apache.cassandra.db.ColumnFamily.create(ColumnFamily.java:66) > > > > at > > org.apache.cassandra.db.ColumnFamily.create(ColumnFamily.java:61) > > > > at > > org.apache.cassandra.db.ColumnFamily.create(ColumnFamily.java:56) > > > > at org.apache.cassandra.db.RowMutation.add(RowMutation.java:183) > > > > at org.apache.cassandra.db.RowMutation.add(RowMutation.java:204) > > > > at ClientOnlyExample.testWriting(ClientOnlyExample.java:78) > > > > at ClientOnlyExample.main(ClientOnlyExample.java:135) > > > > > > > > Regards, > > > > Rahul > > > > This email and any attachments are confidential, and may be legally > > privileged and protected by copyright. If you are not the intended > > recipient dissemination or copying of this email is prohibited. If you > > have received this in error, please notify the sender by replying by > > email and then delete the email completely from your system. Any views > > or opinions are solely those of the sender. This communication is not > > intended to form a binding contract unless expressly indicated to the > > contrary and properly authorised. > > Any actions taken on the basis of this email are at the recipient's > > own risk. > This email and any attachments are confidential, and may be legally > privileged and protected by copyright. If you are not the intended recipient > dissemination or copying of this email is prohibited. If you have received > this in error, please notify the sender by replying by email and then delete > the email completely from your system. Any views or opinions are solely those > of the sender. This communication is not intended to form a binding contract > unless expressly indicated to the contrary and properly authorised. Any > actions taken on the basis of this email are at the recipient's own risk. > > > > -- > Abhijit Chanda > +91-9748888395
