Titan (Graph db) and cassandra connection.

Akashpatel1234 · 12-11-2014, 10:48 AM

Hi,

I am Fedora 20 user and I have installed cassandra and Titan Graph DB in my system I want to tie them together.

Fro data storage I want to use cassandra and for Graph DB but dont know how to connect them both.

I am planning to do this on cluster too.
So pls tell me both solution
1) On single machine
2) on cluster

first I want to experement it on single system and then will go for cluster.

Thanks in advance.

TB0ne · 12-11-2014, 11:10 AM

Quote:

Originally Posted by Akashpatel1234

Hi,
I am Fedora 20 user and I have installed cassandra and Titan Graph DB in my system I want to tie them together. Fro data storage I want to use cassandra and for Graph DB but dont know how to connect them both.

I am planning to do this on cluster too.
So pls tell me both solution
1) On single machine
2) on cluster

first I want to experement it on single system and then will go for cluster.

See the LQ Rules about text speak...spell out your words, please. And did you even TRY to look at the Titan documentation???? Like the parts where setting up Titan to use Cassandra backend is SPECIFICALLY COVERED????
http://s3.thinkaurelius.com/docs/tit...cassandra.html

Doing basic research first is your best first step.

Akashpatel1234 · 12-12-2014, 02:05 AM

I certainly did TB0ne but two things I am unable to understand
but documents first step it self is confusing to me.

Download Cassandra, unpack it, and set filesystem paths in conf/cassandra.yaml and conf/log4j-server.properties

I dont know how set filesystem paths, Moreover I installed Cassandra using repo file (detail here)

so I dont know how to tie them up . Thats why this thread is started.

If you have some other technique then pls help.

TB0ne · 12-12-2014, 10:12 AM

Quote:

Originally Posted by Akashpatel1234

I certainly did TB0ne but two things I am unable to understand but documents first step it self is confusing to me.

Sorry, but we can't do ANYTHING to help you understand the documentation. If you are having problems with it, you may want to consult a co-worker who can explain it to you.

Quote:

Download Cassandra, unpack it, and set filesystem paths in conf/cassandra.yaml and conf/log4j-server.properties

I dont know how set filesystem paths

The documentation is telling you the file to open. Did you open it, and look in it??? Because it has EXAMPLES on how to do what you're asking.

Quote:

Moreover I installed Cassandra using repo file (detail here) so I dont know how to tie them up . Thats why this thread is started.

Doesn't matter how you installed it...the configuration/setup is the same. Follow the instructions.

Quote:

If you have some other technique then pls help.

Again, you need to SPELL OUT YOUR WORDS, and STOP using text speak. You need to read and follow the instructions and documentation.

Akashpatel1234 · 12-25-2014, 08:19 AM

My appology for late reply!!!!!

/home/akash/Pictures/Screenshot from 2014-12-25 19:32:21.png There is no example.

However I tried and found this and I edited the path

Directories where Cassandra should store data on disk. Cassandra
# will spread data evenly across them, subject to the granularity of
# the configured compaction strategy.
# If not set, the default directory is $CASSANDRA_HOME/data/data.
# data_file_directories:
# /home/akash/Cassandra/apache-cassandra-2.1.2/lib/cassandra/data

Directories where Cassandra should store data on disk. Cassandra
# will spread data evenly across them, subject to the granularity of
# the configured compaction strategy.
# If not set, the default directory is $CASSANDRA_HOME/data/data.
# data_file_directories:
# /home/akash/Cassandra/apache-cassandra-2.1.2/lib/cassandra/data

# commit log. when running on magnetic HDD, this should be a
# separate spindle than the data directories.
# If not set, the default directory is $CASSANDRA_HOME/data/commitlog.
# commitlog_directory: /home/akash/Cassandra/apache-cassandra-2.1.2/lib/cassandra/commitlog

please tell me if this is correct.

And more over TBOne I believe that linux questions is a friendly community not a bossy!!!!!!!

TB0ne · 12-25-2014, 10:31 AM

Quote:

Originally Posted by Akashpatel1234

My appology for late reply!!!!!

/home/akash/Pictures/Screenshot from 2014-12-25 19:32:21.png There is no example.

Sorry, no idea what you're talking about here.

Quote:

However I tried and found this and I edited the path

Code:

Directories where Cassandra should store data on disk.  Cassandra
# will spread data evenly across them, subject to the granularity of
# the configured compaction strategy.
# If not set, the default directory is $CASSANDRA_HOME/data/data.
# data_file_directories:
#      /home/akash/Cassandra/apache-cassandra-2.1.2/lib/cassandra/data


Directories where Cassandra should store data on disk.  Cassandra
# will spread data evenly across them, subject to the granularity of
# the configured compaction strategy.
# If not set, the default directory is $CASSANDRA_HOME/data/data.
# data_file_directories:
#      /home/akash/Cassandra/apache-cassandra-2.1.2/lib/cassandra/data

# commit log.  when running on magnetic HDD, this should be a
# separate spindle than the data directories.
# If not set, the default directory is $CASSANDRA_HOME/data/commitlog.
# commitlog_directory: /home/akash/Cassandra/apache-cassandra-2.1.2/lib/cassandra/commitlog

please tell me if this is correct.

No idea if this is correct or not...how are we supposed to know what the correct paths are on your system, or where you installed things? ARE they correct??? And if those things are right, then you probably should uncomment them in the config file

Quote:

And more over TBOne I believe that linux questions is a friendly community not a bossy!!!!!!!

No idea what you mean by "not a bossy", but you do need to read and follow the LQ Rules and Question Guidelines.