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Data Aggregation System
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No APIs, file dataset=*MinimumBias/*Run2012C*RECO run=201196 lumi=534 (22 May 2013 18:46:45 GMT) #3997

Closed dcurry09 closed 11 years ago

dcurry09 commented 11 years ago

Hello DAS,

Seems there is a problem with a search method that used to work

file dataset=_MinimumBias/_Run2012C*RECO run=201196 lumi=534

Any idea how I can modify this to work in the current DAS environment?
Thanks!

David

vkuznet commented 11 years ago

Such query cannot be supported in next DBS due to loose conditions on dataset pattern and requirement to join major DBS tables. Instead you need to break it up into two steps:

  1. find dataset in question you'd like to query, e.g. dataset dataset=_MinimumBias/_Run2012C*RECO it will give you dataset names which belong to your provided pattern
  2. once you know the full dataset path you can query DAS to find files you want for dataset/run/lumi triplet, e.g.

file dataset=/ZeroBias/Run2010B-Skim_logerror-v2/RAW-RECO run=145820 lumi=1

vkuznet commented 11 years ago

After several iteration I found a way to support this query both in DBS2 and DBS3. DBS2 support is in place already, while DBS3 changes went into befcfaa9995dd5bdff0fe6cad99f1b8c22987afa, will schedule this for July release.

vkuznet commented 11 years ago

in production.