Master Data Structures

Nov 02, 2014

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Master Data Structures. Data Structure . The map keeps track of each task and its state Idle In progress Completed keeps track of the machines identity. Fault Tolerance. Master pings each worker periodically to make sure each node is still there

kimberley-edwards

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Master Data Structures

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Master Data Structures
Data Structure • The map keeps track of each task and its state • Idle • In progress • Completed • keeps track of the machines identity
Fault Tolerance • Master pings each worker periodically to make sure each node is still there • If a machine fails then the master sends a command to re-execute the task • Master writes periodic check points if master fails
Questions • ??????