Re: NPE in running ClientOnlyExample

2013-02-18 Thread Abhijit Chanda 
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)

ListCfDef cfDefList = new ArrayListCfDef();
 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
+91-974395

Re: NPE in running ClientOnlyExample

2013-02-18 Thread aaron morton 
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)
 
ListCfDef cfDefList = new ArrayListCfDef();
 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
 +91-974395

Re: NPE in running ClientOnlyExample

2013-02-17 Thread Edward Capriolo 
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.

RE: NPE in running ClientOnlyExample

2013-02-17 Thread Jain Rahul 
Thanks Edward,

My Bad. I was confused as It does seems to create keyspace also, As I 
understand (although i'm not sure)

   ListCfDef cfDefList = new ArrayListCfDef();
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.

NPE in running ClientOnlyExample

2013-02-16 Thread Jain Rahul 
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.