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Transactions (Distributed computing)

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Sri Prasanna
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Distributed Transactions Paul Krzyzanowski [email_address] [email_address] Distributed Systems Except as otherwise noted, the content of this presentation is licensed under the Creative Commons Attribution 2.5 License.
Atomic Transactions ,[object Object],[object Object],[object Object]
Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Basic Operations ,[object Object],[object Object],[object Object],[object Object],[object Object]
Another Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Properties of transactions: ACID ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Nested Transactions ,[object Object],[object Object],[object Object],[object Object],[object Object]
Implementing a private workspace [PLAN A] ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],attributes -> Block 329 -> Block 251 -> Block 783 -> Block 696 myfile Block 329 Block 251 Block 783 Block 696 attributes -> Block 329 -> Block 933 -> Block 783 -> Block 936 myfile’ Block 933 Block 936
Implementing a private workspace [PLAN B] ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Distributed Transactions ,[object Object],[object Object]
Distributed Transactions ,[object Object],[object Object],[object Object],[object Object],[object Object]
Two-phase commit protocol ,[object Object],[object Object],[object Object],[object Object]
Two-phase commit protocol: Phase 1 Get distributed agreement: the coordinator asked each cohort if it will commit or abort and received replies from each coordinator Coordinator Cohort ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Two-phase commit protocol: Phase 2 ,[object Object],Coordinator Cohort ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
The end.

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Transactions (Distributed computing)

  • 1. Distributed Transactions Paul Krzyzanowski [email_address] [email_address] Distributed Systems Except as otherwise noted, the content of this presentation is licensed under the Creative Commons Attribution 2.5 License.
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