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QSERV-L  October 2013

QSERV-L October 2013

Subject:

notes from qserv mtg Oct 22

From:

Jacek Becla <[log in to unmask]>

Reply-To:

General discussion for qserv (LSST prototype baseline catalog)

Date:

Tue, 22 Oct 2013 13:40:01 -0700

Content-Type:

text/plain

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Parts/Attachments

text/plain (54 lines)

Fabrice, Daniel, Douglas, Bill, Jacek

[lots of ad hoc design discussions]

missing in our current draft module diagram
(homework, from Daniel)
  - cluster mgr
  - configuration
  - bootstrapping / static configuration
  - geometry/partitioner (many parts need to know it,
    it is not only on master, things like replication
    management etc need to know on the worker. So,
    geometry not master specific

Jacek's input, see:
https://dev.lsstcorp.org/trac/wiki/db/Qserv/Components#ToDiscuss


Daniel+Bill will work on further details of the modules
for the master query execution
  - need to define interfaces, state kept, etc...

sessionId --> perhaps call it "userQueryId", or uQueryId instead


deal with authorization/authentication later


topics that might be worth addressing soon
  - data loading
  - data distribution
  - configuration
  - worker
  - fault tolerance


would be useful to have fault tolerance checklist
  - what types of problems does the system have to survive


Next meeting this Thursday, probably no heavy design
discussion, might talk about:
  - wishlists
  - documentation
  - merge engine

Jacek

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