Peter W. wrote:
Hi,
Are there any HBase samples out there not using Junit?
Not currently. The unit tests are good source for figuring how to
manipulate hbase. What else do you need?
I would like to:
a. create a master server, region and table descriptor.
Do you mean in code or on the command-line? If the latter:
> ${HBASE_HOME}/bin/start-hbase.sh
> ${HBASE_HOME}/bin/hbase client createTable table_name colum_family_name 3
You may want/need to edit your
${HBASE_HOME}/conf/{hbase-env.sh,regionservers,hbase-site.xml} to suit
your environment.
b. read in and convert a 'csv' file to byte[] (populating a family
with 3 columns).
For general pattern adding to a table goes as follows after creating a
client instance:
long lockid = client.startUpdate(row);
client.put(lockid, column_name, value);
...
client.commit(lockid);
c. get the data back out into Text format.
Text result = new Text(client.get(row_name, column_name));
Also, are scanners required for getting values or can you
access the conceptual model with a labeled column directly?
Yes.
Since data to recreate a table is in the csv, is logging required?
Which logging are you referring to?
Yours,
St.Ack
Thanks,
Peter W.
