A Heartbeat Mechanism and Its Application in Gigascope

@inproceedings{Johnson2005AHM,
  title={A Heartbeat Mechanism and Its Application in Gigascope},
  author={Theodore Johnson and S. Muthukrishnan and Vladislav Shkapenyuk and Oliver Spatscheck},
  booktitle={VLDB},
  year={2005}
}
Data stream management systems often rely on ordering properties of tuple attributes in order to implement non-blocking operators. However, query operators that work with multiple streams, such as stream merge or join, can often still block if one of the input stream is very slow or bursty. In principle, punctuation and heartbeat mechanisms have been proposed to unblock streaming operators. In practice, it is a challenge to incorporate such mechanisms into a highperformance stream management… CONTINUE READING
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