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A method and system for randomly allocating data nodes

A data node, random allocation technology, applied in the field of cloud storage, can solve the problem of no data node allocation probability balance, etc.

Active Publication Date: 2017-04-12
ZHEJIANG DAHUA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To sum up, the existing technology does not have a method that can not only realize the random allocation of data nodes but also ensure a more balanced distribution probability

Method used

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  • A method and system for randomly allocating data nodes
  • A method and system for randomly allocating data nodes
  • A method and system for randomly allocating data nodes

Examples

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Embodiment Construction

[0049] The embodiment of the present invention provides a method and system for random allocation of data nodes, so as to realize a more balanced random allocation of data nodes.

[0050] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0051] Such as figure 1 As shown, a method for randomly assigning data nodes provided by an embodiment of the present invention includes:

[0052] Step S101: When it is determined that data node allocation needs to be performed, according to a preset rule, determine the d...

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PUM

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Abstract

The invention discloses a data node random allocation method and system, and aims to obtain more equilibrated probability for data node random allocation. The data node random allocation method provided by the embodiment comprises following steps: determining data node identities required to be allocated for the current time from an allocation table composed of data node identities according to a preset rule when the a condition that the data nodes are required to be allocated is determined; and allocating the data nodes corresponding to the data node identities required to be allocated for the current time. The allocation table comprises multiple rows of data node identities, the multiple data node identities in each row are randomly distributed, and the data node identities in any two rows are differently distributed. The preset rule comprises one item that the data node identities required to be allocated are determined from the different rows in the allocation table for adjacent two times.

Description

Technical field [0001] The present invention relates to the technical field of cloud storage, in particular to a method and system for random allocation of data nodes. Background technique [0002] The traditional distributed file system randomly allocates data nodes in two allocation modes: polling mode and virtual node mode. In the case of batch application of nodes in the polling mode, data is fixedly distributed on adjacent data nodes, which becomes a performance bottleneck. The virtual node mode generally uses consistent hashing. Its advantage is that the system oscillates less when adding / deleting data nodes, but the consistent hash function is a random function, which is easy when the number of storage nodes is small. Causes uneven data distribution. [0003] Specifically, the polling mode is a common way for distributed storage systems to achieve the ultimate pressure test performance, which is simple to implement and highly efficient. The client applies to the metadata ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/30G06F3/06
Inventor 翁健许焰周明伟王亮舒添翼陈伟张兴明
Owner ZHEJIANG DAHUA TECH CO LTD
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