9-13 July 2018
Sofia, Bulgaria
Europe/Sofia timezone

The archive solution for distributed workflow management agents of the CMS experiment at LHC

9 Jul 2018, 12:00
15m
Hall 8 (National Palace of Culture)

Hall 8

National Palace of Culture

presentation Track 4 - Data Handling T4 - Data handling

Speaker

Valentin Y Kuznetsov (Cornell University (US))

Description

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 talk 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 in order to reliably process, store, and aggregate ~1M documents on a daily basis. We will discuss 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.

Primary author

Valentin Y Kuznetsov (Cornell University (US))

Presentation Materials