Autonomic Workload Change Classification and Prediction for Big Data Workloads
Bibliographic record
Abstract
The big data software stack based on Apache Spark and Hadoop has become mission critical in many enterprises. Performance of Spark and Hadoop jobs depends on a large number of configuration settings. The manual tuning procedure is expensive and brittle. There have been efforts to develop online and off-line automatic tuning approaches to make the big data stack more autonomic, but many researchers noted that it is important to tune only when truly necessary because many parameter searches can reduce rather than enhance performance. Autonomic systems need to be able to accurately detect important changes in workload characteristics, predict future workload characteristics, and use this information to pro-actively optimise resource allocation and frequency of parameter searches. This paper presents the first study focusing on workload change detection, change classification and workload forecasting in big data workloads. We demonstrate 99% accuracy for workload change detection, 90% accuracy for workload and workload transition classification, and up to 96% accuracy for future workload type prediction on Spark and Hadoop job flows simulated using popular big data benchmarks. Our method does not rely on past workload history for workload type prediction.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".