Database Reference
In-Depth Information
tp://JOBTRACKER_ADDRESS:50030
. However, if you are running everything loc-
ally, the address will be
http://localhost:50030
. You can click on a job link and
view its details. On the job detail page, you can see logs for Mapper or Reducer processes.
As per our Reducer configuration, the results can be accessed by Cassandra from the ap-
propriate column family. You may observe the result there. As expected, you will find
the
in highest use, and there are decent number of references to
Alice
,
Hatter
, and
Cat
:
cqlsh:testks> select * from resultCF where key = 'the';
KEY | count
-----+-------
the | 1664
cqlsh:testks> select * from resultCF where key = 'Alice';
KEY | count
-------+-------
Alice | 377
cqlsh:testks> select * from resultCF where key = 'Hatter';
KEY | count
--------+-------
Hatter | 54
cqlsh:testks> select * from resultCF where key = 'Cat';
KEY | count
-----+-------
Cat | 23
The following figure shows a typical setup for analytics with Cassandra and Hadoop:
