Hot spot balancing method for metadata server
A metadata server and data server technology, applied in electrical components, transmission systems, etc., can solve problems such as system service quality degradation, achieve the effect of achieving hot spot balance and improving availability
Active Publication Date: 2014-08-27
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology
[0005] The present invention provides a metadata server hotspot equalization method, aiming at proposing an effective solution to the problem that the system service quality is severely degraded when a large number of accesses in a metadata server cluster are concentrated on a certain metadata server , and at the same time, this method also improves the reliability of the metadata server cluster to a certain extent
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[0035] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0036] The method for balancing hotspots of metadata servers proposed by the invention can solve the problem that a certain metadata server in a cluster of metadata servers becomes a hotspot of access.
[0037] Such as figure 1 As shown, the method is mainly realized by four steps, wherein the metadata server hotspot migration step is further divided into a primary metadata server hotspot migration step and a backup metadata server hotspot migration step. The state transfer process of each metadata server in the metadata server cluster is as follows: figure 2 shown.
[0038] First build a metadata server cluster, and divide the metadata servers in the cluster into several groups, such as image 3 As shown, nine metadata servers are used to form a metadata server cluster, and the metadata server cluster is divided into two groups: ...
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The invention discloses a hot spot balancing method for a metadata server, which is applied in a metadata server cluster. The hot spot balancing method provided by the invention comprises the following steps: (1) dividing the metadata server cluster into a plurality of groups, each of which comprises a plurality of main metadata servers and a plurality of backup metadata servers; (2) constituting a hot spot shifting table on a client to record the information of the main metadata servers and the backup metadata servers when the client is mounted on the main metadata server; (3) monitoring the loading condition of each metadata server to judge whether the metadata server is a query hot spot; (4) and performing hot spot shifting on the corresponding metadata server, namely changing the hot spot shifting table and adjusting the hot spot shifting parameters in the table to lead the client to redistribute request load if the monitored metadata server is the hot spot. With the adoption of the hot spot balancing method provided by the invention, the hot spot problem in the metadata server cluster can be effectively solved, and the hot spot balancing for the whole metadata server cluster can be realized.
Description
technical field [0001] The invention belongs to the technical field of computer storage, and in particular relates to a metadata server hotspot balancing method for metadata server clusters in an object storage file system. Background technique [0002] With the rapid development of computer technology and the rapid progress of information globalization, traditional network storage methods can no longer meet the needs of today's applications. Usually, in a distributed storage architecture, file data and metadata are managed separately, and a dedicated metadata server is provided to manage metadata information. According to statistics, in the current file system, 50%-80% of accesses are operations on metadata. On the other hand, although compared with file data, the storage space occupied by metadata is very small, but for mass storage systems, the storage space occupied by these metadata is also considerable. Websites such as Facebook, The size of the directory that needs ...
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IPC IPC(8): H04L29/06
Inventor王芳冯丹陈碧砚张泉明亮苏楠
OwnerHUAZHONG UNIV OF SCI & TECH