Attendees: Serge, Daniel, Douglas, KT, Jacek

* supporting multiple instances of qserv on single machine
   - almost there, worthwhile to finish
   - configuring ports mostly done (by in2p3 team)
     - still need to template the lua script
     - consecutive port numbers: start from a single config
       file, generate sub configs
     - to use the code for configuring ports, need to fix
       issues with requiring root access
   - should not share /dev/shm/ between qserv instances
      - solution: /dev/shm/qserv/qserv.<pid>
      - the /dev/shm/qserv can be set through config file,
        pid auto-appended by qserv
      - might need to chmod /dev/shm/qserv to world-writable
        - ok for chmod to fail if local policies disallow
      - /dev/shm too small for intermediate results?
        - no problem in short term,
        - in long term it will be used only for caching,
          and results will be streamed directly from worker
          to master without hitting scratch space
   - note: AndyH discourages running multiple xrootds
     on one machine, we work-arounded it
  --> document recent lessons learned [Jacek]


* releases
   - use lsst buildbot (talk to Robyn)
   - rerun every time master changes
   - ok to redo full install each time, using existing scripts
   - once full auto-test done, plug it in buildbot too
     (installing qserv, loading data to qserv and plain mysql,
     comparing results)
  - master branch should always be stable please,
    if you break it, you have to fix it asap
  - for complex merges, we will use dedicated integration
    branches


* setup W13 through qserv on lsst10?
  - yes, try it, should be relatively easy [Douglas or Jacek]


* 120 note setup on yillis: uncovered very unusual bug,
   see #2772 opened after mtg for details


nodes at @in2p3 coming in May
  - in2p3 team planning to use puppet, not clear how easy
    it will be to install qserv that way
  - need to start working on it now to not delay large
    scale tests

* large test files got committed to git (accidentally?)
   by in2p3 team, this should not have happened, will
   have to permanently remove from git

* partitioner code/ticket done, preparing for review
   - fighting some issues with scons

Jacek

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