Data integrity detec4on of corrup4on should be

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Unformatted text preview: informa4on •  Client/Chunk server verify version to make sure things are up ­ to ­date –  Set of Chunks –  Corresponding version numbers –  During cloning opera4ons •  Clone the most up ­to ­date chunk •  Used to detect stale replicas •  Clients and chunk servers expected to verify versioning informa4on •  Remove stale replicas in regular garbage collec4on November 8th, 2012 CS480 Principles of Data Management Aiding the detection of stale chunks •  If a chunk server fails CS480 Principles of Data Management L24.14 November 8th, 2012 L24.17 November 8th, 2012 L24.18 3 2/15/13 CS480 Principles of Data Management Spring 2013 CS480 Principles of Data Management Spring 2013 Data Integrity •  Imprac7cal to detect chunk corrup4ons across replicas –  Not bytewise iden4cal in any case! Data Integrity •  Detec4on of corrup4on should be self ­contained L24.19 November 8th, 2012 CS480 Principles of Data Management Spring 2013 November 8th, 201...
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