libjack

libjack has asked 2 questions and find answers to 21 problems.

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libjack questions

For Hive partition based on date, why use string type? why not int?
Hive: How to test and find for null map entries?

libjack answers

Select distinct on one column but return all columns
How do I make Apache know which app directory to use for different domains?
Hive aggregation function that produces a map
Cassandra: making a data model / schema
How to define composite key for a column family and then reference it using Hector?
HiveQL and rank()
Insert cassandra column family with composite key
Misunderstanding on Composite Key for Cassandra
What should be the connection string while using CQL jdbc driver
Get row with max value in Hive/SQL?