Issue |
EPJ Web of Conf.
Volume 295, 2024
26th International Conference on Computing in High Energy and Nuclear Physics (CHEP 2023)
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---|---|---|
Article Number | 01018 | |
Number of page(s) | 8 | |
Section | Data and Metadata Organization, Management and Access | |
DOI | https://doi.org/10.1051/epjconf/202429501018 | |
Published online | 06 May 2024 |
https://doi.org/10.1051/epjconf/202429501018
Deployment and Operation of the ATLAS EventIndex for LHC Run 3
1 University of Oxford, Oxford, UK
2 Joint Institute for Nuclear Physics, Dubna, Russia
3 University of Genoa and INFN, Genoa, Italy
4 CERN, Geneva, Switzerland
5 University of Amsterdam and NIKHEF, Amsterdam, Netherlands
6 IFIC, University of Valencia and CSIC, Valencia, Spain
7 IJCLab, University Paris-Saclay, Orsay, France
* Presenter: Elizabeth.Gallas@physics.ox.ac.uk
** Corresponding author: Dario.Barberis@cern.ch
Published online: 6 May 2024
The ATLAS Eventlndex is the global catalogue of all ATLAS real and simulated events. During the LHC long shutdown between Run 2 (20152018) and Run 3 (2022-2025) all its components were substantially revised and a new system was deployed for the start of Run 3 in Spring 2022. The new core storage system, based on HBase tables with a SQL interface provided by Phoenix, allows much faster data ingestion rates and scales much better than the old one to the data rates expected for the end of Run 3 and beyond. All user interfaces were also revised and a new command-line interface and web services were also deployed. The new system was initially populated with all existing data relative to Run 1 and Run 2 datasets, and then put online to receive Run 3 data in real time. After extensive testing, the old system, which ran in parallel to the new one for a few months, was finally switched off in October 2022. This paper describes the new system, the move of all existing data from the old to the new storage schemas and the operational experience gathered so far.
© The Authors, published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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