HCLPars: Α New Hierarchical Clustering Log Parsing Method
Received: 5 May 2023 | Revised: 17 May 2023 | Accepted: 18 May 2023 | Online: 9 August 2023
Corresponding author: Arwa Bin Lashram
Event logs are essential in many software systems’ maintenance and development, as detailed runtime information is recorded in them, allowing support engineers and developers to monitor systems, understand behaviors, and identify errors. With the increasing size and complexity of modern software systems, parsing their logs by the traditional (manual) method is cumbersome and useless. For this reason, recent studies have focused on automatically parsing log files. This paper presents the Hierarchical Clustering Log Parsing method, called HCLPars, for automatically parsing log files, consisting of 3 steps: parameter removal according to acquired knowledge in order to avoid errors, grouping similar raw log messages, and getting the set of keys that make up the log. Experiments were run on 16 real system log data, and the performance of the proposed algorithm was compared with the one of other 14 algorithms. It was shown that the HCLPars outperformed the other log parsers in terms of accuracy, efficiency, and robustness.
Keywords:event log mining, system logs, log parsing, log analysis, log management, execution trace, HCLPars, agent
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