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Title: The Archive Solution for Distributed Workflow Management Agents of the CMS Experiment at LHC

Journal Article · · Computing and Software for Big Science
ORCiD logo [1];  [2];  [3]
  1. Cornell Univ., Ithaca, NY (United States)
  2. Heidelberg Univ. (Germany)
  3. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

The CMS experiment at the CERN LHC developed the Workflow Management Archive system to persistently store unstructured framework job report documents produced by distributed workflow management agents. In this paper we present its architecture, implementation, deployment, and integration with the CMS and CERN computing infrastructures, such as central HDFS and Hadoop Spark cluster. The system leverages modern technologies such as a document oriented database and the Hadoop eco-system to provide the necessary flexibility to reliably process, store, and aggregate $$\mathcal{O}$$(1M) documents on a daily basis. We describe the data transformation, the short and long term storage layers, the query language, along with the aggregation pipeline developed to visualize various performance metrics to assist CMS data operators in assessing the performance of the CMS computing system.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
AC02-07CH11359
OSTI ID:
1437402
Report Number(s):
arXiv:1801.03872; FERMILAB-PUB-18-074-CD; 1647570; TRN: US1900324
Journal Information:
Computing and Software for Big Science, Vol. 2, Issue 1; ISSN 2510-2036
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English

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Figures / Tables (4)