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Vectorclocks

JeffreyP.Bezos FounderandChiefExecutiveOfficer Amazon.com,Inc.

Toourshareowners: Randomforests,naïveBayesianestimators,RESTfulservices,gossipprotocols,eventualconsistency,data sharding,anti-entropy,Byzantinequorum,erasurecoding,vectorclocks…walkintocertainAmazonmeetings,

NoSQLDatabases

ListofFigures | ii ListofFigures 3.1 VectorClocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 3.2 VectorClocks–ExchangeviaGossipinStateTransferMode. . . . . . . . . . . . . . . . . . 36

The ROAD RUNNER Dynamic Analysis Framework for Concurrent ...

... 486 Detects races using VectorClocks DJIT+[22] 582 Detects races using an optimized VectorClock algorithm M ULTI R ACE [22] 923 Detects races using a hybrid LockSet/VectorClock analysis G OLDILOCKS [8] ...

Advanced Distributed Systems

...  abcdf  e||(a,b,c,d), but ef p 1 p 2 p 3 ab cd ef m 1 m 2 Physical time VectorClocks -Example a b cd ef m 1 m 2 (2,0,0) (1,0,0) (2,1,0) (2,2,0) (2,2,2) (0,0,1) ...