2011/5/31 Amrita Jayakumar <amritajayakuma...@gmail.com>: > Thank You so much Maki :) Its working now... I dont know what went wrong > yesterday... > > BTW bin/cassandra-cli --host localhost is to read and write data using the > command line client right???
Yes. > So what if i need to load data from a file into cassandra??? > > i.e.i have a log file with so many lines... lines may be in the format > <sessionid> <key> <value> > > so how can i load data from this log file into cassandra? > > Thanks and Regards, > Amrita You can write/read on cassandra from misc. programming language. - Java - Python - Ruby etc. Refer to http://wiki.apache.org/cassandra/ClientOptions for more details. Of course you need to design and define your database schema before writing code. You should better to learn about Cassandra concept and architecture including: - Keyspace - Column Family - Replication Factor - Consistency Level - Distributed Delete - Compaction before going farther. maki > > On Tue, May 31, 2011 at 10:42 AM, Maki Watanabe <watanabe.m...@gmail.com> > wrote: >> >> You can just start >> bin/cassandra -f >> . >> >> Readme.txt says: >> > Now that we're ready, let's start it up! >> > >> > * bin/cassandra -f >> > >> > Running the startup script with the -f argument will cause Cassandra to >> > remain in the foreground and log to standard out. >> >> So, you need another terminal to run cassandra-cli. Open another >> terminal window and then: >> >> Readme.txt says: >> > Now let's try to read and write some data using the command line client. >> > >> > * bin/cassandra-cli --host localhost >> > >> > The command line client is interactive so if everything worked you >> > should >> > be sitting in front of a prompt... >> > >> > Connected to: "Test Cluster" on localhost/9160 >> > Welcome to cassandra CLI. >> >> You will see the cassandra-cli pormpt on your terminal like: >> >> Type 'help;' or '?' for help. Type 'quit;' or 'exit;' to quit. >> [default@unknown] >> >> >> maki >> >> >> >> 2011/5/31 Amrita Jayakumar <amritajayakuma...@gmail.com>: >> > Hi Maki, >> > >> > I am trying to install apache-cassandra-0.7.6-2. >> > Here are the steps i followed as per the readme file. >> > >> > tar -zxvf apache-cassandra-0.7.6-2.tar.gz >> > cd apache-cassandra-0.7.6-2 >> > sudo mkdir -p /var/log/cassandra >> > sudo chown -R `whoami` /var/log/cassandra >> > sudo mkdir -p /var/lib/cassandra >> > sudo chown -R `whoami` /var/lib/cassandra >> > >> > Now is there any configuration settings to be made in >> > apache-cassandra-0.7.6-2/conf/ before i fire >> > >> > bin/cassandra -f ??? >> > >> > If so then which all are the that i should change??? >> > >> > Thanks and Regards, >> > Amrita >> > >> > >> > On Tue, May 31, 2011 at 10:00 AM, Maki Watanabe >> > <watanabe.m...@gmail.com> >> > wrote: >> >> >> >> Did you read Jonathan's reply? >> >> If you can't understand what README says, please let us know where you >> >> are stack on. >> >> >> >> maki >> >> >> >> >> >> 2011/5/31 Amrita Jayakumar <amritajayakuma...@gmail.com>: >> >> > can anyone help me how to start with cassandra??? starting from the >> >> > basics??? >> >> > >> >> > Thanks and Regards, >> >> > Amrita >> >> > >> >> > On Mon, May 30, 2011 at 6:41 PM, Jonathan Ellis <jbel...@gmail.com> >> >> > wrote: >> >> >> >> >> >> Here's what README says: >> >> >> >> >> >> * bin/cassandra -f >> >> >> >> >> >> Running the startup script with the -f argument will cause Cassandra >> >> >> to >> >> >> remain in the foreground and log to standard out. >> >> >> >> >> >> Now let's try to read and write some data using the command line >> >> >> client. >> >> >> >> >> >> * bin/cassandra-cli --host localhost >> >> >> >> >> >> The command line client is interactive so if everything worked you >> >> >> should >> >> >> be sitting in front of a prompt... >> >> >> >> >> >> Connected to: "Test Cluster" on localhost/9160 >> >> >> Welcome to cassandra CLI. >> >> >> >> >> >> Type 'help;' or '?' for help. Type 'quit;' or 'exit;' to quit. >> >> >> [default@unknown] >> >> >> >> >> >> >> >> >> On Mon, May 30, 2011 at 4:09 AM, Amrita Jayakumar >> >> >> <amritajayakuma...@gmail.com> wrote: >> >> >> > Marcus, >> >> >> > Can u please tell me how to do that??? I was just >> >> >> > following >> >> >> > the >> >> >> > instructions in the README file that came with the package. >> >> >> > >> >> >> > Thanks and Regards, >> >> >> > Amrita >> >> >> > >> >> >> > On Mon, May 30, 2011 at 2:36 PM, Marcus Bointon >> >> >> > <mar...@synchromedia.co.uk> >> >> >> > wrote: >> >> >> >> >> >> >> >> On 30 May 2011, at 10:59, Amrita Jayakumar wrote: >> >> >> >> >> >> >> >> > I am new to cassandra. I am trying to start the Cassandra >> >> >> >> > single >> >> >> >> > node >> >> >> >> > setup using the command >> >> >> >> > bin/cassandra -f. But there is no response from the prompt.. >> >> >> >> > this >> >> >> >> > is >> >> >> >> > what it shows >> >> >> >> >> >> >> >> I'm new to this too, but I think you're looking at the wrong >> >> >> >> thing. >> >> >> >> cassandra -f is not an interactive mode, it just runs the server >> >> >> >> in >> >> >> >> the >> >> >> >> foreground and shows you log output, which is useful for >> >> >> >> debugging >> >> >> >> server >> >> >> >> config. The output you have looks like it's working fine. You >> >> >> >> need >> >> >> >> to >> >> >> >> start >> >> >> >> another terminal and connect to it from a cassandra client. >> >> >> >> >> >> >> >> Marcus >> >> >> > >> >> >> >> >> >> >> >> >> >> >> >> -- >> >> >> Jonathan Ellis >> >> >> Project Chair, Apache Cassandra >> >> >> co-founder of DataStax, the source for professional Cassandra >> >> >> support >> >> >> http://www.datastax.com >> >> > >> >> > >> >> >> >> >> >> >> >> -- >> >> w3m >> > >> > >> >> >> >> -- >> w3m > > -- w3m
