Auto-parallelizing stateful distributed streaming applications
Parallel Architectures and Compilation Techniques - Conference Proceedings, PACT
53 - 63
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Please cite this item using this persistent URLhttp://hdl.handle.net/11693/28156
Streaming applications transform possibly infinite streams of data and often have both high throughput and low latency requirements. They are comprised of operator graphs that produce and consume data tuples. The streaming programming model naturally exposes task and pipeline parallelism, enabling it to exploit parallel systems of all kinds, including large clusters. However, it does not naturally expose data parallelism, which must instead be extracted from streaming applications. This paper presents a compiler and runtime system that automatically extract data parallelism for distributed stream processing. Our approach guarantees safety, even in the presence of stateful, selective, and userdefined operators. When constructing parallel regions, the compiler ensures safety by considering an operator's selectivity, state, partitioning, and dependencies on other operators in the graph. The distributed runtime system ensures that tuples always exit parallel regions in the same order they would without data parallelism, using the most efficient strategy as identified by the compiler. Our experiments using 100 cores across 14 machines show linear scalability for standard parallel regions, and near linear scalability when tuples are shuffled across parallel regions. Copyright © 2012 by the Association for Computing Machinery, Inc. (ACM).
- Conference Paper 2294
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Schneider, S.; Hirzel, M.; Gedik, B.; Wu, K.-L. (IEEE Computer Society, 2015)Streaming applications process possibly infinite streams of data and often have both high throughput and low latency requirements. They are comprised of operator graphs that produce and consume data tuples. General streaming ...
Gedik, B.; Schneider, S.; Hirzel, M.; Wu, K.-L. (IEEE Computer Society, 2014)This article addresses the profitability problem associated with auto-parallelization of general-purpose distributed data stream processing applications. Auto-parallelization involves locating regions in the application's ...
Schneider, S.; Hirzel, M.; Gedik, B. (2013)This tutorial starts with a survey of optimizations for streaming applications. The survey is organized as a catalog that introduces uniform terminology and a common categorization of optimizations across disciplines, such ...