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Designing HBase Schema to Best Support Specific Queries

Real scenario, very good analysis of different data access requirements, and three possible solutions. What’s your pick?

The problem is fairly simple - I am storing “notifications” in hbase, each of which has a status (“new”, “seen”, and “read”). Here are the API’s I need to provide:

  • Get all notifications for a user
  • Get all “new” notifications for a user
  • Get the count of all “new” notifications for a user
  • Update status for a notification
  • Update status for all of a user’s notifications
  • Get all “new” notifications accross the database
  • Notifications should be scannable in reverse chronological order and allow pagination.

Original title and link: Designing HBase Schema to Best Support Specific Queries (NoSQL database©myNoSQL)

via: http://stackoverflow.com/questions/8983503/designing-hbase-schema-to-best-support-specific-queries