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From 杨定裕 <>
Subject How to use S4 to implement Join operator
Date Wed, 03 Oct 2012 08:24:57 GMT
I have read the paper of S4: Distributed Stream Computing Platform.
There is a example of Joining: Click-through rate. Two data tables RawServe
and RawClick are joined according 'serve' column.
The data with same serve in two tables are sent to the same PE. The data
are streaming to the PE and joined.
 I have a question :
While there are new tuples sent to the PE, PE has no previous data and
previous data in the PE are discarded after streaming processing.
As I know,the data is not stored in the PE.
So how can I join the data in the PE?

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