Comet: Batched Stream Processing in Data Intensive Distributed Computing

He, B; Yang, M; Guo, Z; Chen, R; Su, B; Lin, W; Zhou, L

Performance and resource optimization is an important
research problem in data intensive distributed comput-
ing. We present a new batched stream processing model
that captures query correlations to expose I/O and com-
putation redundancies for optimizations. The model is
inspired by our empirical study on a trace from a pro-
duction large-scale data processing cluster, which reveals
significant redundancies caused by strong temporal and
spatial correlations among queries.
We have developed Comet, a query processing
system that embraces the batched stream processing

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