Date
Attendees
Fritz Mueller, Fabrice Jammes, John Gates, Brian Van Klaveren, Andy Salnikov, Andy Hanushevsky, Unknown User (npease), Vaikunth Thukral, Kian-Tat Lim
Discussion items
L1/AP Database
- Andy S is sorting through rotAngle schema issues, and has opened a related RFC
Shared scans
- John has been testing with memman enabled on the IN2P3 cluster, and has seen some odd results, and will continue to investigate:
- SELECT COUNT(*) FROM Object takes about 3min (should be 30sec)
- scans were running in 1hr 15m, now done in 1hr
- only one scheduler seems to be executing at a time
- the shared scan subsystem doesn't seem to be grabbing all the memory if could
Large results
- Proxy and czar now survive queries with result sets ~7G, but the mysql client dies
- Suggested to try client APIs as well
Butler
- RFC-184 is closing. Nate started implementation in parallel and is largely done
- Nate is working on refactoring the data-id class. DM-5558 is wrapped up in this as well
DAX
- Brian is starting work on the DAX service containerization design.
- Will use stack base container that Fabrice has is place for qserv
VO
- Brian has published notes from IVOA on confluence: https://community.lsst.org/t/ivoa-interop-meeting-notes-may-2016
XSWAP
- Vaikunth is working an a strategy to transform logs to JSON, then load and do analysis with R
- Needs some querid changes to make logs of start and end of queries consistent. In the meantime, will work with data from czar only.
- Vaikunth has designed a test matrix for machine configuration sizing tests
Documentation
- Andy H working on updating XRootD documentation for new features: single-session, logging plug-in, holding results
Misc
- John has a few reviews up that require attention; please check
- Andy S on vacation 6/10-6/15
- Andy H is starting to think on disconnected query design and czar-failover
- Andy H will be at CERN next week