NoSQL OD, Bizarro, cappuccino and some sales stories

Emulating SQL on a NoSQL database - (MongoDB) database using Map Reduce. Ironic? You are probably thinking, if Bizarro wrote computer programs this would be one of his Sunday comic panels. Actually, it's not that weird if you consider what Hive and Pig do. The bottom line is SQL-like languages still prevail regardless of the underlying implementation, whether you do distributed Map-Reduce or Streaming Joins in CEP/ESP.

Many cappuccinos later....

I was curious to know how big the core of Apache Cassandra was. It's surprisingly compact for the features it offers. About 15K NCSS or real source statements. I used good old JavaNCSS to measure.

Nr.   Classes Functions      NCSS  Javadocs Package
  1         8        34       486         0 org.apache.cassandra.cli
  2         1         3        50         1 org.apache.cassandra.client
  3        11        74       250        42 org.apache.cassandra.concurrent
  4         3        60       494         4 org.apache.cassandra.config
  5        98       565      3585        64 org.apache.cassandra.db
  6        14        56       389         9 org.apache.cassandra.db.filter
  7         9        19       113         5 org.apache.cassandra.db.marshal
  8        24       128       610        22 org.apache.cassandra.dht
  9        35       154      1048        34 org.apache.cassandra.gms
 10        37       196      1345        68 org.apache.cassandra.io
 11        11        75       634        29 org.apache.cassandra.locator
 12        23       152      1100        29 org.apache.cassandra.net
 13        19        78       460         0 org.apache.cassandra.net.io
 14         2         6        34         0 org.apache.cassandra.net.sink
 15        53       291      2514        95 org.apache.cassandra.service
 16         4        40       602        28 org.apache.cassandra.tools
 17        44       240      1346        52 org.apache.cassandra.utils
    --------- --------- --------- ---------
          396      2171     15060       482 Total

 Packages   Classes Functions      NCSS  Javadocs | per
-------------------------------------------------------------
    17.00    396.00   2171.00  15060.00    482.00 | Project
              23.29    127.71    885.88     28.35 | Package
                         5.48     38.03      1.22 | Class
                                   6.94      0.22 | Function



Had too much NoSQL for one day? Then read this nice article written by Steve Blank - Convergent Technologies: War Story 1 – Selling with Sports Scores.

Cheers!