MySQL Cluster and Pushdown-joins (In Pursuit of the Holy Grail)

Pushdown of joins for MySQL cluster is a feature aim to dramatically broaden the type applications that can use ndb.

• why joins with ndb sometimes are slow
• how pushing down of joins work in ndb
• how the mysqld integration is done and how we hope other storage engines will benefit from our work
• how this work relates to Batched Key Access (BKA)
• the type of use-cases that we target initially, and what we plan to do next
• fantastic numbers for unrealistic benchmarks and great numbers for realistic benchmarks
• and finally how we hope to find the holy grail which combines OLTP and reporting in the same distributed HA database