Speaker
Daniel Wang
(SLAC National Accelerator Laboratory)
Description
The LSST catalog of celestial objects will need to answer both simple
and complex queries over many billions of rows. Since no existing
open-source database efficiently supports its requirements, we have
are developing Qserv, a prototype database-style system, to handle
such volumes. Qserv uses Xrootd as a framework for data-addressed
communication to a cluster of machines with standalone MySQL
instances. Xrootd provides fault-tolerance and replication support,
while MySQL provides a basic SQL execution engine. Using a spatial
spherical partitioning approach, Qserv fragments queries and
aggregates results scalably even for expensive spatial self-joins.
Author
Daniel Wang
(SLAC National Accelerator Laboratory)
