- See a list of topics below
|Progress on topics discussed at the previous meeting Database Meeting 2022-01-26|
Qserv readiness for DP0.2:
Fritz Mueller's proposal for the "Grand Unification" of the relevant Git packages (qserv, qserv-operator, etc.). Are we going for this?
Fritz Mueller's proposal to move the documentation tools into the Qserv build container
|Mike Reed's idea of dealing with the very wide Object (alike) tables|
Fritz Mueller: this idea has been around for a while and was known as "Object-lite". That table could be stored in a conventional database. Some folks are still interested in it (because Qserv is expensive and complex to set up and maintain).
Colin Slater: no actual effort has been made yet. Though, the idea is known.
Igor Gaponenko: Qserv may treat queries with table JOINs differently, which may affect the performance. We know that we had this issue in the past after fixes made in the Linux kernel to address a problem of https://meltdownattack.com/. These fixes resulted in a dramatic drop of the Qserv performance (*KPM30*) for the JOIN queries.
|What shall we do about existing Qserv catalogs at NCSA?|
|What's next for the transition to entrypoint?|
Igor Gaponenko is ready to begin (gradually) migrating Qserv setups at NCSA to use entrypoints.
Igor Gaponenko: asked if it's possible to pass a file with template variables instead of specifying multiple --targ parameters.
Unknown User (npease): the JINJA template processor is configured to catch unresolved templates in the config files.