Distributed system with asynchronous execution systems and methods
First Claim
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1. A method of performing a transaction in a distributed system, the method comprising:
- obtaining, by a first computing node, a first command and a second command that define functions to be performed in the transaction, wherein the first command includes dependency information that comprises a first local dependency that must be satisfied before the first command is executed and a first remote dependency that must be satisfied before the first command is executed, and wherein the second command includes dependency information that comprises a second dependency that must be satisfied before the second command is executed;
holding the first command in a waiting state until the first local dependency is satisfied;
determining that the second dependency is satisfied;
causing the execution of the second command;
determining that the first local dependency is satisfied and that there is a first remote dependency that must be satisfied;
transmitting the first command to a second computing node for asynchronous execution, the second computing node to determine when to perform the functions defined by the first command based on the first remote dependency included in the first command; and
determining that the first command has been executed at the second computing node.
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Abstract
Systems and methods are provided for reducing latency in distributed systems by executing commands as sufficient information and system resources become available. In one embodiment, commands in a transaction include dependency information and an execution engine is configured to execute the commands as the dependencies become satisfied. In some embodiments, the commands also include priority information. If sufficient resources are not available to execute two or more commands with satisfied dependencies, the execution engine determines an order for executing the commands based at least in part on the priority information. In one embodiment, time-intensive commands are assigned a higher priority than commands that are expected to take less time to execute.
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Citations
16 Claims
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1. A method of performing a transaction in a distributed system, the method comprising:
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obtaining, by a first computing node, a first command and a second command that define functions to be performed in the transaction, wherein the first command includes dependency information that comprises a first local dependency that must be satisfied before the first command is executed and a first remote dependency that must be satisfied before the first command is executed, and wherein the second command includes dependency information that comprises a second dependency that must be satisfied before the second command is executed; holding the first command in a waiting state until the first local dependency is satisfied; determining that the second dependency is satisfied; causing the execution of the second command; determining that the first local dependency is satisfied and that there is a first remote dependency that must be satisfied; transmitting the first command to a second computing node for asynchronous execution, the second computing node to determine when to perform the functions defined by the first command based on the first remote dependency included in the first command; and determining that the first command has been executed at the second computing node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A distributed system comprising:
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a plurality of commands, each command structured to include dependency information and priority information; and a plurality of nodes comprising a first node and a second node, each node comprising at least one computer processor, wherein the first node is configured to; obtain a first command and a second command that define functions to be performed in a transaction, wherein the first command includes dependency information that comprises a first dependency that must be satisfied before the first command is executed, and wherein the second command includes dependency information that comprises a second local dependency that must be satisfied before the second command is executed and a second remote dependency that must be satisfied before the second command is executed; process the dependency information included in the first command; execute the first command only after the first dependency is satisfied; process the dependency information included in the second command; transmit the second command to a second node for asynchronous execution only after the second local dependency is satisfied; and determine that the second node has executed the second command; and wherein the second node is configured to; receive the second command from the first node; process the dependency information associated with the second command; and execute the second command only after the second remote dependency is satisfied. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification
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Current AssigneeEmc IP Holding Company LLC (Dell Technologies Inc.)
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Original AssigneeEMC Corporation (Dell Technologies Inc.)
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InventorsSchack, Darren P., Godman, Peter J.
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Primary Examiner(s)An; Meng
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Assistant Examiner(s)Kawsar; Abdullah Al
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Application NumberUS11/262,308Publication NumberTime in Patent Office2,195 DaysField of SearchNoneUS Class Current718/106CPC Class CodesG06F 9/5038 considering the execution o...
