Re:FoundationDB's Lesson: A Fast Key-Value Store Is Not Enough
by arielweisberg on Wednesday April 01, 2015 @05:00PM
(#9306853)
Former VoltDB developer here.
John makes some good technical arguments about why implementing transactional SQL on top of a distributed KV store (even a transactional one) is hard.
The points about metadata performance and consistency were actually new ideas to me. I already had beef with moving the data around to SQL nodes as that is an obvious waste of capacity.
But the importance of metadata in processing SQL queries in a distributed database never occurred to me even though I've lost a decent chunk of my life implementing that consistency. It's one of those things you take for granted if it's how you have always done it.
John makes some good technical arguments about why implementing transactional SQL on top of a distributed KV store (even a transactional one) is hard.
The points about metadata performance and consistency were actually new ideas to me. I already had beef with moving the data around to SQL nodes as that is an obvious waste of capacity.
But the importance of metadata in processing SQL queries in a distributed database never occurred to me even though I've lost a decent chunk of my life implementing that consistency. It's one of those things you take for granted if it's how you have always done it.