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SessionAction Items
User workspace requirements
  • Need a new term to refer to user-created tables that are do not bring the full spectrum of "Level 3" requirements; i.e., user uploads a random catalog, what do we call that?
    • Context: Gregory suggested that a user could make a "level 3" data product on their home computer, but Frossie suggests this shouldn't be conflated with products stored on the DAC
  • Need to clearly specify that we support a MyDB-type storage of arbitrary data, does not have to be related-in-scientific-meaning to the LSST data products
  • Determine how tables will be uploaded to MyDB, either by Portal or Notebook or external clients.
  • There was a discussion of "direct access to consolidated database", beyond capabilities of IVOA protocols. Need to follow up on whether this is  mediated by DAX services or if some form of more direct connection to consolidated DB is acceptable.
  • Science platform requirements say MyDB reqs are "still in development"
  • Scope effort for providing user-facing crossmatches/comparisons with other surveys, beyond those that are already in-use for Pipelines validation.
  • What are the sizes of user-generated data in existing archives? Our 10% for users is probably too small.
    •  Leanne Guy will ask Gaia archive for user data volumes.
  • What is the story that we will tell reviewers for how external groups will leverage more compute/storage, of their own acquisition, beyond the 10%? What development requirements does such a system impose on us, and what decisions do we need to make to support this "beyond 10%" capability? Do we have appropriate requirements in the baseline, and to support evolving this N-years into operations?
  •  Leanne Guy will write a tech note listing some "Level 3"/"MyDB" science use cases and present first version at SST/DMLT F2F Nov 2018  
Arch and Blockers
  • Raise at DMLT the question of whether Google is a required deployment target.
  • Raise at DMLT whether the parquet support should be added to the portal.
  • Gregory Dubois-FelsmannColin Slater and Michelle Gower will discuss what type of story we should write up w.r.t. submitting jobs to the batch system from the notebook.
  •  Kian-Tat Lim will write some initial options for resource measurement and metering.
  • John Maloney to write up options for LSP application logging infrastructure  
  • Having parquet replication instead of replication inside of qserv has an impact on operational recovery; Are we willing to accept this?
  • Implicit in the parquet+dask/spark scenario is that the data would be stored separately from the compute resources. Are the network resources sufficient to support this?
Authentication and Authorization
  • Brian Van Klaveren will update DMTN-094 to describe a proposed design.
  • Brian Van Klaveren aim to bring this up at the November IVOA, if possible.
  • Kian-Tat Lim to raise at DMLT that the DMTN-094 proposal would require a token server to be built and is not yet assigned to a WBS.
  • Colin Slater to raise the A&A/security usage patterns at SST, develop a document describing the user stories.
  • In the Thursday A&A session, Kian-Tat Lim proposed to write up the identity-based authentication system as an initial sufficient system to build. The more sophisticated capabilities-based system could be developed as an evolution of that, closer to or during operations.
  • DMTN-094 update should include a comparison to what other archives are implementing.
  • Kian-Tat Lim Gregory Dubois-Felsmann to write up options for standardizing the names and meanings of capabilities. Proposed methods are: 1) change-controlled document 2) shared library 3) shared service.
  • After we codify our DMTN-094-level design, we need to collaborate (via IVOA) on improving the authentication capabilities of non-LSST clients (topcat, pyvo). Arch team responsibility?

Pre-Meeting Planning

Suggested topics for discussion


10.5.18- updated rooming list



Food nearest NCSA:

  • Daily Byte (sandwiches); NCSA Lobby
  • Daily Byte II (sandwiches); Electrical Engineering Building lobby (1 block east)
  • Einsteins (sandwiches); Siebel Center lobby (next building south)
  • Beckman Café (cafeteria-style; sandwiches and hot entrees with vegetarian & vegan options); Beckman Institute (1 block east-northeast)
  • Other (north and east on University Ave):
    • Burger King
    • Perkins
    • Dairy Queen
    • Taco Bell
    • Niro’s Gyros