Departmental Papers (CIS)

Date of this Version

12-2011

Document Type

Journal Article

Comments

Amsterdamer, Y., Davidson, S., Deutch, D., Milo, T., Stoyanovich, J., & Tannen, V., Putting Lipstick on Pig: Enabling Database-Style Workflow Provenance, CoRR, 2011, http://arxiv.org/abs/1201.0231

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Abstract

Workflow provenance typically assumes that each module is a “black-box”, so that each output depends on all inputs (coarse-grained dependencies). Furthermore, it does not model the internal state of a module, which can change between repeated executions. In practice, however, an output may depend on only a small subset of the inputs (finegrained dependencies) as well as on the internal state of the module. We present a novel provenance framework that marries database-style and workflow-style provenance, by using Pig Latin to expose the functionality of modules, thus capturing internal state and fine-grained dependencies. A critical ingredient in our solution is the use of a novel form of provenance graph that models module invocations and yields a compact representation of fine-grained workflow provenance. It also enables a number of novel graph transformation operations, allowing to choose the desired level of granularity in provenance querying (ZoomIn and ZoomOut), and supporting “what-if” workflow analytic queries. We implemented our approach in the Lipstick system and developed a benchmark in support of a systematic performance evaluation. Our results demonstrate the feasibility of tracking and querying fine-grained workflow provenance.

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Date Posted: 19 July 2012