Issues in event abstraction
Debugging distributed applications is very difficult, due to a number of problems. To manage the inherent complexity of distributed applications, for example, the use of abstractions is proposed. Event abstractions group sets of events into one higher-level event. Only event sets with certain properties guarantee proper abstraction. This paper examines two specific event set structures in more depth: complete precedence abstractions and contractions. Its main results are as follows. First, it is shown how the algorithmic detection of complete precedence abstractions can be simplified. Second, an additional structural requirement for contractions is derived to ensure their complete timestamping.
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