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Root Cause Analysis (RCA) is a crucial aspect of incident management in large-scale cloud services. While the term root cause analysis or RCA has been widely used, different studies formulate the task differently. This is because the term…

Software Engineering · Computer Science 2025-10-23 Aoyang Fang , Haowen Yang , Haoze Dong , Qisheng Lu , Junjielong Xu , Pinjia He

Cloud-native microservices enable rapid iteration and scalable deployment but also create complex, fast-evolving dependencies that challenge reliable diagnosis. Existing root cause analysis (RCA) approaches, even with multi-modal fusion of…

Software Engineering · Computer Science 2025-10-28 Songhan Zhang , Aoyang Fang , Yifan Yang , Ruiyi Cheng , Xiaoying Tang , Pinjia He

Root cause localization in cloud native microservice systems requires modeling complex service dependencies, irregular temporal dynamics, and heterogeneous observability data. We present HyperODE RCA, a unified framework that combines…

Machine Learning · Computer Science 2026-05-04 Xin Liu , Yuhang He , Sichen Zhao , Kejian Tong , Xingyu Zhang

To assist IT service developers and operators in managing their increasingly complex service landscapes, there is a growing effort to leverage artificial intelligence in operations. To speed up troubleshooting, log anomaly detection has…

Machine Learning · Computer Science 2024-05-24 Thorsten Wittkopp , Philipp Wiesner , Odej Kao

Root Cause Analysis (RCA) in telecommunication networks is a critical task, yet it presents a formidable challenge for Artificial Intelligence (AI) due to its complex, graph-based reasoning requirements and the scarcity of realistic…

Computation and Language · Computer Science 2025-07-29 Keyu Wu , Qianjin Yu , Manlin Mei , Ruiting Liu , Jun Wang , Kailai Zhang , Yelun Bao

Implementing large language models (LLMs)-driven root cause analysis (RCA) in cloud-native systems has become a key topic of modern software operations and maintenance. However, existing LLM-based approaches face three key challenges:…

Artificial Intelligence · Computer Science 2025-11-06 Xiao Zhang , Qi Wang , Mingyi Li , Yuan Yuan , Mengbai Xiao , Fuzhen Zhuang , Dongxiao Yu

Availability issues of industrial microservice systems (e.g., drop of successfully placed orders and processed transactions) directly affect the running of the business. These issues are usually caused by various types of service anomalies…

Software Engineering · Computer Science 2025-03-03 Dewei Liu , Chuan He , Xin Peng , Fan Lin , Chenxi Zhang , Shengfang Gong , Ziang Li , Jiayu Ou , Zheshun Wu

Cloud application services are distributed in nature and have components across the stack working together to deliver the experience to end users. The wide adoption of microservice architecture exacerbates failure management due to…

Performance · Computer Science 2025-09-09 Dhanya R Mathews , Mudit Verma , Pooja Aggarwal , J. Lakshmi

With the rapid development of cloud computing and ultra-large-scale data centers, the scale and complexity of systems have increased significantly, leading to frequent faults that often show cascading propagation. How to achieve efficient,…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-09-17 Jian Hou

Microservice systems (MSS) have become a predominant architectural style for cloud services. Yet the community still lacks high-quality, publicly available datasets for anomaly detection (AD) and root cause analysis (RCA) in MSS. Most…

Software Engineering · Computer Science 2026-02-02 Ke Ping , Hamza Bin Mazhar , Yuqing Wang , Ying Song , Mika V. Mäntylä

Recent advances in large language models (LLMs) have enabled early attempts to automate root cause analysis (RCA) in microservice-based systems (MSS). Yet, prior works typically rely on a linear reasoning process that proceeds along a…

Software Engineering · Computer Science 2026-05-06 Alexander Naakka , Yuqing Wang , Mika V Mäntylä

Cloud-based services are surging into popularity in recent years. However, outages, i.e., severe incidents that always impact multiple services, can dramatically affect user experience and incur severe economic losses. Locating the…

Root Cause Analysis (RCA) is becoming ever more critical as modern systems grow in complexity, volume of data, and interdependencies. While traditional RCA methods frequently rely on correlation-based or rule-based techniques, these…

Artificial Intelligence · Computer Science 2025-03-04 Ahmed Dawoud , Shravan Talupula

Recent rapid advancements of machine learning have greatly enhanced the accuracy of prediction models, but most models remain "black boxes", making prediction error diagnosis challenging, especially with outliers. This lack of transparency…

Machine Learning · Statistics 2025-04-29 Hiroshi Yokoyama , Ryusei Shingaki , Kaneharu Nishino , Shohei Shimizu , Thong Pham

Root Cause Analysis (RCA) of any service-disrupting incident is one of the most critical as well as complex tasks in IT processes, especially for cloud industry leaders like Salesforce. Typically RCA investigation leverages data-sources…

Information Retrieval · Computer Science 2022-04-26 Amrita Saha , Steven C. H. Hoi

For large-scale distributed systems, it's crucial to efficiently diagnose the root causes of incidents to maintain high system availability. The recent development of microservice architecture brings three major challenges (i.e., operation,…

Software Engineering · Computer Science 2021-09-23 Hanzhang Wang , Zhengkai Wu , Huai Jiang , Yichao Huang , Jiamu Wang , Selcuk Kopru , Tao Xie

LLM-based root cause analysis (RCA) agents have recently emerged as a promising paradigm for incident diagnosis in microservice AIOps. However, their reliability remains fragile: an error in early evidence collection, hypothesis…

Artificial Intelligence · Computer Science 2026-05-18 Junle Wang , Xingchuang Liao , Wenjun Wu

Fault localization is challenging in online micro-service due to the wide variety of monitoring data volume, types, events and complex interdependencies in service and components. Faults events in services are propagative and can trigger a…

Artificial Intelligence · Computer Science 2024-02-22 Tingting Wang , Guilin Qi , Tianxing Wu

The dynamics and complexity of cloud-native systems present significant challenges for Root Cause Analysis (RCA). While causality-based RCA methods have shown significant progress in recent years, their practical adoption is fundamentally…

Software Engineering · Computer Science 2026-03-03 Shuai Liang , Pengfei Chen , Bozhe Tian , Gou Tan , Maohong Xu , Youjun Qu , Yahui Zhao , Yiduo Shang , Chongkang Tan

With the development of cloud-native technologies, microservice-based software systems face challenges in accurately localizing root causes when failures occur. Additionally, the cloud-edge collaborative environment introduces more…

Software Engineering · Computer Science 2024-06-21 Yuhan Zhu , Jian Wang , Bing Li , Xuxian Tang , Hao Li , Neng Zhang , Yuqi Zhao