CN107220342A - The control method and system of a kind of distributed data base - Google Patents
The control method and system of a kind of distributed data base Download PDFInfo
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- CN107220342A CN107220342A CN201710386071.3A CN201710386071A CN107220342A CN 107220342 A CN107220342 A CN 107220342A CN 201710386071 A CN201710386071 A CN 201710386071A CN 107220342 A CN107220342 A CN 107220342A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/16—File or folder operations, e.g. details of user interfaces specifically adapted to file systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/13—File access structures, e.g. distributed indices
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/18—File system types
- G06F16/182—Distributed file systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/25—Integrating or interfacing systems involving database management systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0604—Improving or facilitating administration, e.g. storage management
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0638—Organizing or formatting or addressing of data
- G06F3/064—Management of blocks
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/067—Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
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- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
The invention discloses a kind of control method of distributed data base, methods described includes initialization physics block device, carry file system, file system is used for runtime database, the object of the Object Creation first kind based on file system, the first kind is the derived class of Equations of The Second Kind, and Equations of The Second Kind is the class of the external exploitation of database, the object of the first kind is sent to database, runtime database.One file system of carry, makes database be run in file system, can be saved the data on physics block device by file system, direct operating physical block device, the problem of solving redundant write.
Description
Technical field
The present invention relates to database technical field, a kind of control method more specifically to distributed data base and
System.
Background technology
Key assignments distributed networks database query speed is fast, storage data volume is big, support high concurrent, is especially suitable for entering by major key
Row inquiry.Wherein, Level databases are the very efficient key assignments distributed data bases that a Google realizes, and Rocks data
Storehouse is then to be improved obtained product in Level databases.Rocks databases can make full use of the higher every of flash memory
Second is written and read the number of times performance of (I/O) operation, while can also utilize the calculating performance of multiple-core server, facebook has existed at present
Rocks databases GitHub (one towards increase income and privately owned software project hosted platform) issued Rocks numbers on the page
According to race point benchmark results of the storehouse on Fusion-io (one do database company) server, facebook claims its speed
Level databases than Google are many soon.Rocks databases are based on file system in itself, it is impossible to direct operating physical block
Equipment, but the related processing of system is abstracted into Env by Rocks databases, and the Env of acquiescence is PosixEnv, is directly docked local
File system, user can realize EnvWrapper interfaces with succession, and the encapsulation of first floor system is provided for Rocks databases.
However, Rocks databases typically operate on the file system of host (such as XFS), there is file system
The problem of log information of itself and the redundant write of the write-ahead log system of Rocks databases.In the prior art, do not use
In the technical scheme for solving this problem.
The content of the invention
In view of this, it is an object of the invention to provide a kind of control method of distributed data base, one file of carry
System, makes database be run in file system, can be saved the data on physics block device by file system, directly operates
Physics block device, the problem of solving redundant write.
To achieve the above object, the present invention provides following technical scheme：
A kind of control method of distributed data base, the described method comprises the following steps：
Initialize physics block device；
Carry file system, the file system is used to run the database；
The object of the Object Creation first kind based on the file system, the first kind is the derived class of Equations of The Second Kind, institute
State the class for the external exploitation that Equations of The Second Kind is the database；
The object of the first kind is sent to the database；
Run the database.
Preferably, the initialization physics block device includes：
Format the physics block device；
Generate the metadata information of superblock and the metadata information of write-ahead log file；
Generate operator；
The operator is stored into the write-ahead log file；
The superblock and the write-ahead log file are stored to the physics block device.
Preferably, the carry file system includes：
The superblock in the physics block device is read, the storage file system is generated based on the superblock
Metadata information；
Metadata information based on the storage file system reads the write-ahead log file；
The metadata of metadata and file based on the write-ahead log file and operator generation catalogue；
Load the metadata of the catalogue and the metadata of the file；
Set up the object of the write-ahead log file.
Being preferably based on the metadata information reading write-ahead log file of the storage file system includes：
Offset, length and the fast equipment of place logic in metadata information based on the storage file system are read
Take the write-ahead log file.
A kind of control device of distributed data base, the control device includes system processor, physical block managing device
And operation processor, wherein：
The physical block managing device and system processor initialization physics block device；
The physical block managing device and the system processor carry file system, the file system are used to run institute
State database；
The object of the Object Creation first kind of the system processor based on the file system, the first kind is second
The derived class of class, the Equations of The Second Kind is the class of the external exploitation of the database；
The operation processor sends the object of the first kind to the database；
The system processor and the operation processor run the database.
Preferably, the physical block managing device includes space management processor and read-write processor；The initial compound
Reason block device includes：
The space management processor formats the physics block device；
The metadata information of the system processor generation superblock and the metadata information of write-ahead log file；
The system processor generates operator；
The system processor stores the operator into the write-ahead log file；
The read-write processor stores the superblock and the write-ahead log file to the physics block device.
Preferably, the physical block managing device includes space management processor and read-write processor；The carry file
System includes：
The read-write processor reads the superblock in the physics block device, and the system processor is based on described
The metadata information of the superblock generation storage file system；
Metadata information of the read-write processor based on the storage file system reads the write-ahead log text
Part；
Metadata and file of the system processor based on the write-ahead log file and operator generation catalogue
Metadata；
The system processor loads the metadata of the catalogue and the metadata of the file；
The system processor sets up the object of the write-ahead log file.
Being preferably based on the metadata information reading write-ahead log file of the storage file system includes：
Offset, length and institute in metadata information of the read-write processor based on the storage file system
The write-ahead log file is read in the fast equipment of logic.
It can be seen from the above technical proposal that the invention discloses a kind of control method of distributed data base, the side
Method includes initialization physics block device, and carry file system, file system is used for runtime database, the object based on file system
The object of the first kind is created, the first kind is the derived class of Equations of The Second Kind, and Equations of The Second Kind is the class of the external exploitation of database, by the first kind
Object send to database, runtime database.One file system of carry, makes database be run in file system, passes through
File system can be saved the data on physics block device, direct operating physical block device, the problem of solving redundant write.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of flow chart of the embodiment 1 of the control method of distributed data base disclosed by the invention；
Fig. 2 is the flow chart of the embodiment 2 of the control method of another distributed data base disclosed by the invention；
Fig. 3 is the flow chart of the embodiment 2 of the control method of another distributed data base disclosed by the invention；
Fig. 4 is a kind of structural representation of the embodiment 1 of the control system of distributed data base disclosed by the invention；
Fig. 5 is a kind of structural representation of the embodiment 2 of the control system of distributed data base disclosed by the invention；
Fig. 6 is a kind of structural representation of the embodiment 3 of the control system of distributed data base disclosed by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is all other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As shown in figure 1, a kind of flow chart of the embodiment 1 of the control method of distributed data base disclosed by the invention, this
Method comprises the following steps：
S101, initialization physics block device；
For ease of the operation of Rocks databases, after system boot, physics block device is initialized, wherein physics block device
It may include nonvolatile random access memory, solid state hard disc and mechanical hard disk.
S102, carry file system, file system are used for runtime database；
In order to support InspurFS, the super block message of basic data structure, inode information, the extension of file system are defined
Information (records fast information), and wherein superblock deposits general unique identifier, version number, block size, write-ahead log file
The information such as metadata；The information such as inode number, size, creation time, the place physics block device of inode information storage file；Text
Skew and length of extension information (recording fast information) the storage file content of part system in physics block device.
S103, the Object Creation first kind based on file system object, the first kind are the derived class of Equations of The Second Kind, Equations of The Second Kind
For the class of the external exploitation of database；
Rocks databases::EnvWrapper is the class of the external exploitation of Rocks databases, Rocks databases::
EnvWrapper is Equations of The Second Kind, and the first kind is InspurRocksEnv, and InspurRocksEnv is to inherit Rocks databases::
EnvWrapper's realizes class.The object of the Object Creation first kind based on file system, that is, create InspurRocksEnv's
Object.
S104, the object of the first kind sent to database；
The object of the first kind is sent to database, i.e., sent InspurRocksEnv object to Rocks databases.
S105, runtime database；
InspurRocksEnv object is sent to Rocks databases, you can the operation Rocks databases.
The invention discloses a kind of control method of distributed data base, methods described includes initialization physics block device,
Carry file system, file system is used for runtime database, the object of the Object Creation first kind based on file system, the first kind
For the derived class of Equations of The Second Kind, Equations of The Second Kind is the class of the external exploitation of database, and the object of the first kind is sent to database, operation
Database.One file system of carry, makes database be run in file system, thing can be saved the data in by file system
Manage on block device, direct operating physical block device, the problem of solving redundant write.
As shown in Fig. 2 being the control of the present invention disclosed another distributed data base on the basis of the embodiment
The flow chart of the embodiment 2 of method, this method comprises the following steps：
S201, formatting physics block device；
The size of physical equipment block device is read, the space distribution condition of physical equipment block device is initialized.
S202, the metadata information for generating superblock and write-ahead log file metadata information；
S203, generation operator；
Operator (OP) is generated, wherein OP is command code.
S204, operator stored into write-ahead log file；
Operator (OP) is stored to write-ahead log file, the carry for follow-up file system.
S205, superblock and write-ahead log file stored to physics block device；
Superblock and write-ahead log file are stored to physics block device, after storage, the internal storage data of correlation can be emptied.
As shown in figure 3, being the control of the present invention disclosed another distributed data base on the basis of the embodiment
The flow chart of the embodiment 3 of method, this method comprises the following steps：
S301, the superblock read in physics block device, the metadata information of storage file system is generated based on superblock；
The superblock in physics block device is read, at physics block device storage write-ahead log document misregistration 4096, parsing
Go out to deposit the metadata information of file system.
S302, the metadata information based on storage file system read write-ahead log file；
Based on the metadata information of storage file system, write-ahead log file is read.Wherein, can be based on storage file system
Metadata information in offset, length and the fast equipment of place logic read write-ahead log file.
S303, the metadata based on write-ahead log file and operator generation catalogue and file metadata；
Read after write-ahead log file, the metadata (dir_map) and file of catalogue are recovered based on operator (OP)
Metadata (file_map).
S304, the metadata for loading catalogue and file metadata；
The metadata (file_map) of the metadata (dir_map) of catalogue and file is carried in internal memory.
S305, the object for setting up write-ahead log file；
The object of write-ahead log file is set up, the processing for the write-ahead log fileinfo of postorder.
As shown in figure 4, being a kind of structural representation of the embodiment 1 of the control device of distributed data base disclosed by the invention
Figure, the control device includes system processor 102, physical block managing device 101 and operation processor 103, wherein：
Physical block managing device 101 and the initialization physics block device of system processor 102；
For ease of the operation of Rocks databases, after system boot, physics block device is initialized, wherein physics block device
It may include nonvolatile random access memory, solid state hard disc and mechanical hard disk.
Physical block managing device 101 and the carry file system of system processor 102, file system are used for runtime database；
In order to support InspurFS, the super block message of basic data structure, inode information, the extension of file system are defined
Information (records fast information), and wherein superblock deposits general unique identifier, version number, block size, write-ahead log file
The information such as metadata；The information such as inode number, size, creation time, the place physics block device of inode information storage file；Text
Skew and length of extension information (recording fast information) the storage file content of part system in physics block device.
The object of the Object Creation first kind of the system processor 102 based on file system, the first kind is the succession of Equations of The Second Kind
Class, Equations of The Second Kind is the class of the external exploitation of database；
Rocks databases::EnvWrapper is the class of the external exploitation of Rocks databases, Rocks databases::
EnvWrapper is Equations of The Second Kind, and the first kind is InspurRocksEnv, and InspurRocksEnv is to inherit Rocks databases::
EnvWrapper's realizes class.The object of the Object Creation first kind based on file system, that is, create InspurRocksEnv's
Object.
Operation processor 103 sends the object of the first kind to database；
The object of the first kind is sent to database, i.e., sent InspurRocksEnv object to Rocks databases.
System processor 102 and the operation runtime database of processor 103；
InspurRocksEnv object is sent to Rocks databases, you can operation Rocks databases.
The invention discloses a kind of control method of distributed data base, method includes initialization physics block device, carry
File system, file system is used for runtime database, and the object of the Object Creation first kind based on file system, the first kind is the
The derived class of two classes, Equations of The Second Kind is the class of the external exploitation of database, and the object of the first kind is sent to database, service data
Storehouse.One file system of carry, makes database be run in file system, physical block can be saved the data in by file system
In equipment, direct operating physical block device, the problem of solving redundant write.
As shown in figure 5, being the control of the present invention disclosed another distributed data base on the basis of above-described embodiment
The structural representation of the embodiment 2 of device, the control device includes system processor 201, space management processor 202 and read
Processor 203 is write, physical block managing device includes space management processor 202 and read-write processor 203；The control device bag
Include：
Space management processor 202 formats physics block device；
The size of physical equipment block device is read, the space distribution condition of physical equipment block device is initialized.
The metadata information of the generation superblock of system processor 201 and the metadata information of write-ahead log file；
System processor 201 generates operator；
Operator (OP) is generated, wherein OP is command code.
System processor 201 stores operator into write-ahead log file；
Operator (OP) is stored to write-ahead log file, the carry for follow-up file system.
Read-write processor 203 stores superblock and write-ahead log file to physics block device；
Superblock and write-ahead log file are stored to physics block device, after storage, the internal storage data of correlation can be emptied.
As shown in fig. 6, being the control of the present invention disclosed another distributed data base on the basis of above-described embodiment
The structural representation of the embodiment 3 of device, the control device includes system processor 301, space management processor 302 and read
Processor 303 is write, physical block managing device includes space management processor 302 and read-write processor 303；The control device bag
Include：
The superblock read and write in the reading physics block device of processor 303, system processor 301 is based on superblock and generates storage
The metadata information of file system；
The superblock in physics block device is read, at physics block device storage write-ahead log document misregistration 4096, parsing
Go out to deposit the metadata information of file system.
Read and write metadata information of the processor 303 based on storage file system and read write-ahead log file；
Based on the metadata information of storage file system, write-ahead log file is read.Wherein, can be based on storage file system
Metadata information in offset, length and the fast equipment of place logic read write-ahead log file.
The metadata of metadata and file of the system processor 301 based on write-ahead log file and operator generation catalogue；
Read after write-ahead log file, the metadata (dir_map) and file of catalogue are recovered based on operator (OP)
Metadata (file_map).
The metadata of the loading catalogue of system processor 301 and the metadata of file；
The metadata (file_map) of the metadata (dir_map) of catalogue and file is carried in internal memory.
System processor 301 sets up the object of write-ahead log file；
The object of write-ahead log file is set up, the processing for the write-ahead log fileinfo of postorder.
The embodiment of each in this specification is described by the way of progressive, what each embodiment was stressed be with it is other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (8)
1. a kind of control method of distributed data base, it is characterised in that the described method comprises the following steps：
Initialize physics block device；
Carry file system, the file system is used to run the database；
The object of the Object Creation first kind based on the file system, the first kind is the derived class of Equations of The Second Kind, described the
Two classes are the class of the external exploitation of the database；
The object of the first kind is sent to the database；
Run the database.
2. the method as described in claim 1, it is characterised in that the initialization physics block device includes：
Format the physics block device；
Generate the metadata information of superblock and the metadata information of write-ahead log file；
Generate operator；
The operator is stored into the write-ahead log file；
The superblock and the write-ahead log file are stored to the physics block device.
3. the method as described in claim 1, it is characterised in that the carry file system includes：
The superblock in the physics block device is read, first number of the storage file system is generated based on the superblock
It is believed that breath；
Metadata information based on the storage file system reads the write-ahead log file；
The metadata of metadata and file based on the write-ahead log file and operator generation catalogue；
Load the metadata of the catalogue and the metadata of the file；
Set up the object of the write-ahead log file.
4. method as claimed in claim 2, it is characterised in that the metadata information based on the storage file system is read
The write-ahead log file is taken to include：
Offset, length and the fast equipment of place logic in metadata information based on the storage file system read institute
State write-ahead log file.
5. a kind of control device of distributed data base, it is characterised in that the control device includes system processor, physical block
Managing device and operation processor, wherein：
The physical block managing device and system processor initialization physics block device；
The physical block managing device and the system processor carry file system, the file system are used to run the number
According to storehouse；
The object of the Object Creation first kind of the system processor based on the file system, the first kind is Equations of The Second Kind
Derived class, the Equations of The Second Kind is the class of the external exploitation of the database；
The operation processor sends the object of the first kind to the database；
The system processor and the operation processor run the database.
6. device as claimed in claim 5, it is characterised in that the physical block managing device include space management processor and
Read and write processor；The initialization physics block device includes：
The space management processor formats the physics block device；
The metadata information of the system processor generation superblock and the metadata information of write-ahead log file；
The system processor generates operator；
The system processor stores the operator into the write-ahead log file；
The read-write processor stores the superblock and the write-ahead log file to the physics block device.
7. device as claimed in claim 5, it is characterised in that the physical block managing device include space management processor and
Read and write processor；The carry file system includes：
The read-write processor reads the superblock in the physics block device, and the system processor is based on described super
The metadata information of the block generation storage file system；
Metadata information of the read-write processor based on the storage file system reads the write-ahead log file；
The member of metadata and file of the system processor based on the write-ahead log file and operator generation catalogue
Data；
The system processor loads the metadata of the catalogue and the metadata of the file；
The system processor sets up the object of the write-ahead log file.
8. device as claimed in claim 6, it is characterised in that the metadata information based on the storage file system is read
The write-ahead log file is taken to include：
Offset, length and place in metadata information of the read-write processor based on the storage file system are patrolled
Collect fast equipment and read the write-ahead log file.
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| CN109407971A (en) * | 2018-09-13 | 2019-03-01 | 新华三云计算技术有限公司 | The method and device of staging disk lock |
| CN109407971B (en) * | 2018-09-13 | 2021-12-07 | 新华三云计算技术有限公司 | Method and device for upgrading disk lock |
| CN109814946A (en) * | 2018-12-29 | 2019-05-28 | 创新科存储技术（深圳）有限公司 | A kind of method and apparatus for realizing distributed storage in XenServer |
| CN109814946B (en) * | 2018-12-29 | 2022-03-25 | 深圳创新科技术有限公司 | Method and device for realizing distributed storage in XenServer |
| CN113342427A (en) * | 2021-06-01 | 2021-09-03 | 青岛小鸟看看科技有限公司 | Program control method and device |
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