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Database cluster metadata management method and system

A metadata and database technology, applied in the database field, can solve problems such as cluster metadata inconsistency, and achieve the effect of ensuring consistency

Inactive Publication Date: 2016-03-23
TIANJIN NANKAI UNIV GENERAL DATA TECH
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  • Claims
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Problems solved by technology

[0006] Embodiments of the present invention provide a database cluster metadata management method and system to solve the problem of inconsistency in cluster metadata caused by clients accessing from different cluster nodes simultaneously initiating the same management metadata request in a high-concurrency scenario

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  • Database cluster metadata management method and system
  • Database cluster metadata management method and system

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Embodiment Construction

[0047] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only parts related to the present invention are shown in the drawings but not all content.

[0048] figure 2 A first embodiment of the present invention is shown.

[0049] figure 2 It is a schematic flowchart of the database cluster metadata management method provided by the first embodiment of the present invention. The method of this embodiment is executed by the database cluster management system. The system is implemented by the cooperation of the nodes in the database cluster and the global lock management entity. It is realized by means of hardware and software, and is integrated in the database cluster.

[0...

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Abstract

Embodiments of the invention provide a database cluster metadata management method and system. The method comprises the steps that a cluster initiation node receives a management request sent by a client and sends a locking request to a global lock management entity; the global lock management entity receives the locking request, judges whether a lock conflict exists or not and judges whether an available lock resource exists or not; when no lock conflict exists and the lock resource exists, a locking success response is sent to the cluster initiation node; the cluster initiation node receives the locking success response and sends a metadata management request to other nodes in a cluster; all nodes in the cluster manage metadata according to the request and sends a response success message to the cluster initiation node after the management is completed; and the cluster initiation node receives the response success message and sends an unlocking request to the global lock management entity. The problem of cluster metadata inconsistency caused by the fact that clients accessing to different cluster nodes initiate the same metadata management request at the same time in a high-concurrency scene is solved.

Description

technical field [0001] The invention belongs to the technical field of databases, and in particular relates to a database cluster metadata management method and system. Background technique [0002] With the rapid development of information technology, the number of users and data volume of an enterprise have shown explosive growth. While the business volume has increased, the rapid growth of database visits and data volume has also increased the processing capacity and computing intensity of the database. , making it impossible for a single-node database to bear. In such a context, a large-scale distributed database cluster has emerged. The so-called database cluster refers to the use of two or more database services to form a virtual single database logical image, which provides transparent data services to clients like a single database. . [0003] In a database system, metadata is data describing data (data about data), mainly information describing data properties, us...

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F16/2365G06F16/27
Inventor 赵伟武新王洪越杨伟伟
Owner TIANJIN NANKAI UNIV GENERAL DATA TECH
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