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|Titel:||Workload based provenance capture reduction|
|Zusammenfassung:||Multiple solutions have been developed that collect provenance in Data-Intensive Scalable Computing (DISC) systems like Apache Spark and Apache Hadoop. Existing solutions include RAMP, Newt, Lipstick and Titian. Though these solutions support debugging within the dataflow programs, they introduce a space overhead of 30-50% of the size of the input data during provenance collection. In a productive environment, this overhead is too high to permanently track provenance and to store all the provenance information. That is why solutions exist that reduce the amount of provenance data after their collection. Among those are Prox, Propolis and distillations. However, they do not address the problem of incurring space overhead during the execution of a dataflow program. The existing provenance reduction techniques do not consider optimizing the provenance reduction based on particular use cases or applications of provenance. The goal of this thesis is to find and evaluate application-dependent provenance data reduction techniques that are applicable during execution of dataflow programs. To this end, we survey multiple applications and use cases of provenance like data exploration, monitoring, data quality etc. In addition, we analyze how provenance is being used in them. Furthermore, we introduce nine data reduction techniques that can be applied to provenance in the context of different use cases. We formally describe and evaluate four out of the nine techniques - sampling, histogram, clustering and equivalence classes on top of Apache Spark. There is no benchmark available to test different provenance solutions. Hence, we define six scenarios on two different datasets to evaluate them. We also consider the application of provenance in each scenario. We use these techniques to obtain reduced provenance data then, we introduce three metrics to compare the reduced provenance data to full provenance. We perform a quantitative analysis to compare different techniques based on these metrics. Afterwards, we perform a qualitative analysis to examine the effectiveness of different reduction techniques in the context of a particular use case.|
|Enthalten in den Sammlungen:||05 Fakultät Informatik, Elektrotechnik und Informationstechnik|
Dateien zu dieser Ressource:
|MasterThesis_PriyankaJadhav.pdf||16,44 MB||Adobe PDF||Öffnen/Anzeigen|
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