Date

08 Dec 2015

Attendees

• Princeton: John Swinbank

• IPAC: Unknown User (xiuqin), Gregory Dubois-Felsmann, Serge Monkewitz, Unknown User (jar)
• SQUARE: Frossie Economou, Unknown User (nidever), Angelo Fausti
• UW: Simon Krughoff, Russell Owen, Mario Juric
• NCSA: Hsin-Fang Chiang, Unknown User (mcarras2)

• SLAC: Unknown User (npease), Fritz Mueller, Brian Van Klaveren, Vaikunth Thukral, Jacek Becla

• Architecture: Kian-Tat Lim, Tim Jenness

Goals

• check if created stories (see Butler Discussion 2015-12-02) adequately cover all requests
• finalize prioritization and decide on next steps

Discussion items / decisions

Highest priority story from each group:

• Princeton: 
• UW: 
• SQUARE: ; sufficient to define interface (i.e. URLs and how configured) for now, although a minimal implementation should be relatively easy.
  
• IPAC: multiple output repositories, see below
• NCSA: nothing requested at this time, so do  that UW wants 

Main focus in the short term:

• stories listed above
• defining interfaces (text and code). Application, storage, I/O interfaces first. Remote access later
• conceptual design document, including how all the stories fit together
• pull in stories that impact overall architectural design as needed
• meeting ~ mid January

Technical discussion

• Multiple output repositories
  • needed urgently by supertask
  • K-T prefers single output repository with configurable sequence of destinations per dataset type
  • design discussion needed, no story yet
• Pickling
  • butler should be able to pickle objects  (attempt to do it if possible, not always possible)
  • also, butler should be pickle-able. Not clear how much state butler will keep, if/how to pickle in-memory butler storage

Action items

• Unknown User (npease) Add story about pickling objects
• Jacek Becla and Unknown User (npease) schedule butler JIRA stories