CN105069091B - A kind of Virtual File System and its implementation based on HBASE - Google Patents
A kind of Virtual File System and its implementation based on HBASE Download PDFInfo
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- 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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- G06F16/10—File systems; File servers
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Abstract
The present invention relates to a kind of Virtual File System and its implementation based on HBASE, wherein method include：Step 1：Initialization is carried out to Virtual File System with distributed memory library to connect；Step 2：Open catalogue, by under catalogue All Files and subdirectory be loaded into memory；Step 3：Catalogue is read, the All Files being loaded into memory and subdirectory are sequentially returned successively；Step 4：File in distributed memory library is opened, data is read from being obtained in HBASE or stores data into HBASE；Step 5：Execute file close operation；Step 6：Catalogue is closed, is terminated.The present invention solves in big data storing process, when carrying out big data storage using HBASE, the problem of needing significantly to change date storage method.Reduce the influence that operation layer changes data storage layer so that operation system is more convenient by the change of traditional file systems memory module to big data memory module.
Description
Technical field
The present invention relates to a kind of Virtual File System and its implementation based on HBASE.
Background technology
With the arrival in big data epoch, quick response mass memory becomes the main feature of data storage scheme.Then
HBASE based on distributed structure/architecture rapidly becomes the preferred embodiment of big data storage, but is arrived carrying out traditional file systems
In HBASE file system migration process, the change of data storage principle becomes one and unavoidable assaults fortified position a little.
Invention content
Technical problem to be solved by the invention is to provide one kind to solve in big data storing process, using HBASE into
Row big data store when, need to date storage method carry out significantly change the problem of virtual text of the use based on HBASE
Part system and its implementation.
The data storage characteristics of present invention combination traditional file systems and HBASE file system, use distributed memory library
As secondary storage medium storage file grade directory index traditional file system is simulated using HBASE storage file data contents
The file read-write operations of system effectively reduce during data migration, the shadow that business changes data storage layer medium
It rings.
The technical solution that the present invention solves above-mentioned technical problem is as follows：A kind of reality of the Virtual File System based on HBASE
Existing method, specifically includes following steps：
Step 1：Initialization is carried out to Virtual File System with distributed memory library to connect；
Step 2：Catalogue is opened, reads the directory information stored in distributed memory library, and by the All Files under catalogue
And subdirectory is loaded into memory；
Step 3：Catalogue is read, and the All Files being loaded into memory and subdirectory are sequentially returned successively；
Step 4：The file in distributed memory library is opened, data are read from HBASE or stores data into HBASE
In；
Step 5：Execute file close operation；
Step 6：Catalogue is closed, is terminated.
The beneficial effects of the invention are as follows：The present invention solves in big data storing process, and carrying out big data using HBASE deposits
Chu Shi, the problem of needing significantly to change date storage method.It is virtual using distributed memory database and HBASE
Traditional file system reduces the influence that operation layer changes data storage layer so that operation system is by traditional file system
The change for memory module to the big data memory module of uniting is more convenient.
Based on the above technical solution, the present invention can also be improved as follows.
Further, the step 4 specifically includes following steps：
Step 4.1：Judge whether current operation is read mode, if so, executing step 4.2；Otherwise, step is executed
4.4；
Step 4.2：The corresponding unique I D of locating file from distributed memory library open scanner, are generated using this ID
Rowkey prefixes carry out HBASE table scans, obtain scan data；
Step 4.3：Scan data is read, step 5 is executed；
Step 4.4：It is currently write mode, unique I D is generated to data in distributed memory library, and carry out HBASE
Table handling is opened, the I D for controlling generation generate corresponding rowkey prefixes；
Step 4.5：By additional index after rowkey prefixes, indexed as rowkey with this, it will by keyword of file record
In data storage to HBASE, step 5 is executed.
Further, the step 5 specifically includes following steps：
Step 5.1：Whether judgment step 4 executes read mode, if so, executing step 5.2；Otherwise, step is executed
5.3；
Step 5.2：The scanner opened in step 4.2 is closed, step 6 is executed；
Step 5.3：Refresh interface is called, HBASE is carried out and operation, assuring data security is submitted to execute step 6.
Further, the index relative of file and catalogue is stored in distributed memory library in the step 1, virtual file system
System can obtain corresponding directory index relationship after establishing connection with distributed memory library.
Further, when opening catalogue in the step 2, pair for reading catalogue and file index in distributed memory library is needed
It should be related to, search the All Files and subdirectory under current directory.
Further, when carrying out file reading in the step 4.2, the state letter for reading file in distributed memory library is needed
Breath, and file data record is obtained from HBASE.
Further, it when carrying out file deletion, needs to change corresponding file status information in distributed memory library, makes it be
Invalid state is subsequently carried out the delete operation of corresponding data in HBASE by auxiliary tool, avoids the efficiency that data are directly deleted
Problem.
The technical solution that the present invention solves above-mentioned technical problem is as follows：A kind of Virtual File System based on HBASE, including
Link block, catalogue open module, catalogue read module, File Open module, closing of a file module and catalogue closedown module；
The link block is connected for carrying out initialization with distributed memory library to Virtual File System；
The catalogue opens module and is used to open catalogue, reads the directory information stored in distributed memory library, and by mesh
All Files and subdirectory under record are loaded into memory；
The catalogue read module for reading catalogue, and by the All Files and subdirectory that are loaded into memory sequentially according to
Secondary return distributed memory library；
The File Open module is used to open the file in distributed memory library, and data are read from HABSE or will be counted
According in storage to HBASE；
The closing of a file module is for executing file close operation；
The catalogue closedown module terminates for closing catalogue.
Based on the above technical solution, the present invention can also be improved as follows.
Further, the File Open module includes mode deciding module, read module and writing module；
The mode deciding module is for judging whether current operation is read mode, if so, triggering read module；It is no
Then, writing module is triggered；
The read module is used for the corresponding unique ID of locating file from distributed memory library, opens scanner, utilizes
This ID generates rowkey prefixes and carries out HBASE table scans, obtains scan data；Read scan data；
Said write module is used to generate unique ID to data in distributed memory library, and carries out HBASE opening tables behaviour
Make, the ID for controlling generation generates corresponding rowkey prefixes；By additional index after rowkey prefixes, indexed as rowkey with this,
It is stored data into HBASE by keyword of file record.
Further, it when the catalogue opens opening catalogue in module, needs to read catalogue and file in distributed memory library
The correspondence of index searches All Files and subdirectory under current directory.
Further, when carrying out file reading in the read module, the state for reading file in distributed memory library is needed
Information, and file data record is obtained from HBASE.
Further, it when carrying out file deletion, needs to change corresponding file status information in distributed memory library, makes it be
Invalid state is subsequently carried out the delete operation of corresponding data in HBASE by auxiliary tool.
Traditional file systems form unique file path with file directory and file name, are based on HBASE virtual files
The implementation method of system, using distributed memory library as file path and the storage medium of index, in HBASE with rowkey,
Unique record of row cluster, row name, value mark specified files.
Based on HBASE Virtual File Systems, it is necessary first in a distributed manner memory bank as file directory and file name and
The storage medium of index, least unit are file, the unique index of each file or catalogue pair one, the relationship of catalogue and file
It is stored in the form of recursive in distributed memory library.
Based on HBASE Virtual File Systems, next corresponding data of file is stored in HBASE, and least unit is record,
The organizational form of rowkey is " file unique index inverted order " plus record unique index, is convenient for the read-write of file.
Based on HBASE Virtual File Systems, the read-write interface similar to traditional file systems is again provided, including catalogue
Operation and file operation, interface parameters and return value meaning are essentially identical with traditional file systems, reduce operation layer for number
The change called according to storage method and interface.
The main thought of the present invention is：The characteristics of storing data in conjunction with traditional file systems and HBASE file system, leads to
Cross the use of design and distributed memory library to the rowkey and value of HBASE data, the data of virtual traditional file systems
Storage mode, provide the file operations such as sopen (File Open), swrite (data write-in), sclose (closing of a file) and
Smkdir (createing directory), sopendir (opening catalogue), sreaddir (reading catalogue), sclosedir (closing catalogue) etc.
Directory operation.Simultaneously by data according in the form storage to HBASE of key-value.Service application is reduced to the greatest extent for data
Layer storage medium change perception, while based on Virtual File System the characteristics of, the querying method of Virtual File System is provided, from
And realize when carrying out different file system data inquiries, inquire the consistency of principle.
Description of the drawings
Fig. 1 is a kind of implementation method flow chart of Virtual File System based on HBASE described in the embodiment of the present invention；
Fig. 2 is a kind of structure diagram of Virtual File System based on HBASE described in the embodiment of the present invention
In attached drawing, parts list represented by the reference numerals are as follows：
1, link block, 2, catalogue open module, 3, catalogue read module, 4, File Open module, 5, closing of a file mould
Block, 6, catalogue closedown module, 41, mode deciding module, 42, read module, 43, writing module.
Specific implementation mode
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
As shown in Figure 1, for a kind of implementation method of Virtual File System based on HBASE described in the embodiment of the present invention,
Specifically include following steps：
Step 1：Initialization is carried out to Virtual File System with distributed memory library to connect；
Step 2：Catalogue is opened, reads the directory information stored in distributed memory library, and by the All Files under catalogue
And subdirectory is loaded into memory；
Step 3：Catalogue is read, and the All Files being loaded into memory and subdirectory are sequentially returned successively；
Step 4：Judge whether current operation is read mode, if so, executing step 5；Otherwise, step 7 is executed；
Step 5：The corresponding unique ID of locating file from distributed memory library opens scanner, is generated using this ID
Rowkey prefixes carry out HBASE table scans, obtain scan data；
Step 6：Scan data is read, step 9 is executed；
Step 7：It is currently write mode, unique ID is generated to data in distributed memory library, and carry out HBASE openings
Table handling, the ID for controlling generation generate corresponding rowkey prefixes；
Step 8：By additional index after rowkey prefixes, is indexed as rowkey with this, will be counted by keyword of file record
According in storage to HBASE, step 9 is executed；
Step 9：Execute file close operation；
Step 10：Catalogue is closed, is terminated.
The step 9 specifically includes following steps：
Step 9：Whether judgment step 4 executes read mode, if so, executing step 9.2；Otherwise, step 9.3 is executed；
Step 9.2：The scanner opened in step 5 is closed, step 10 is executed；
Step 9.3：Refresh interface is called, HBASE is carried out and operation, assuring data security is submitted to execute step 10.
When opening catalogue in the step 2, the correspondence for reading catalogue and file index in distributed memory library is needed,
Search the All Files and subdirectory under current directory.
When carrying out file reading in the step 5, the status information for reading file in distributed memory library is needed, and from
File data record is obtained in HBASE.
It when carrying out file deletion, needs to change corresponding file status information in distributed memory library, it is invalid shape to make it
State is subsequently carried out the delete operation of corresponding data in HBASE by auxiliary tool.
As shown in Fig. 2, for a kind of Virtual File System based on HBASE described in the embodiment of the present invention, including connection mould
Block 1, catalogue open module 2, catalogue read module 3, File Open module 4, closing of a file module 5 and catalogue closedown module 6；
The link block 1 is connected for carrying out initialization with distributed memory library to Virtual File System；
The catalogue opens module 2 and is used to open catalogue, reads the directory information stored in distributed memory library, and by mesh
All Files and subdirectory under record are loaded into memory；
The catalogue read module 3 is used to read catalogue, and sequentially by the All Files and subdirectory that are loaded into memory
Distributed memory library is returned to successively；
The File Open module 4 is used to open the file in distributed memory library, and data are read from HBASE or will be counted
According in storage to HBASE；
The closing of a file module 5 is for executing file close operation；
The catalogue closedown module 6 terminates for closing catalogue.
The File Open module 4 includes mode deciding module 41, read module 42 and writing module 43；
The mode deciding module 41 is for judging whether current operation is read mode, if so, triggering read module
42；Otherwise, writing module 43 is triggered；
The read module 42 is used for the corresponding unique ID of locating file from distributed memory library, opens scanner, profit
Rowkey prefixes are generated with this ID and carry out HBASE table scans, obtain scan data；Read scan data；
Said write module 43 is used to generate unique ID to data in distributed memory library, and carries out HBASE opening tables
Operation, the ID for controlling generation generate corresponding rowkey prefixes；By additional index after rowkey prefixes, is indexed with this and be
Rowkey is stored data by keyword of file record in HBASE.
The catalogue is opened when opening catalogue in module 2, needs to read catalogue and file index in distributed memory library
Correspondence searches All Files and subdirectory under current directory.
When carrying out file reading in the read module 42, the status information for reading file in distributed memory library is needed,
And file data record is obtained from HBASE.
It when carrying out file deletion, needs to change corresponding file status information in distributed memory library, it is invalid shape to make it
State is subsequently carried out the delete operation of corresponding data in HBASE by auxiliary tool.
HBASE file system is distributed file system, be first to HABSE files before using the storage of HBASE systems
System carries out initialization connection.It, can be right in conjunction with the file and directory index relationship in distributed memory library after normal connection
HBASE file system uses the file read/write method similar to traditional file systems to be operated.Operating process is as follows：
1. sinit is called to carry out the connection of distributed memory library and HBASE attended operations；
2. calling sopendir into column catalogue opening operation, need to read catalogue in distributed memory library in this operating process
Information, and by under catalogue All Files and subdirectory be loaded into memory；
3. calling sreaddir into column catalogue read operation, this operating process needs the text being loaded into step 2 in memory
Part and catalogue return successively in sequence；
4. sopen is called to carry out file open operation, this operating process includes both of which, and one kind is read mode, from
The corresponding unique ID of locating file in distributed memory library, using this ID generate rowkey prefix carry out HBASE table scans, one
Class is write mode, and unique ID is generated in distributed memory library, and carries out HBASE and open table handling；
5. sread is called to carry out File read operation, this operating process needs 4 read mode of read step to scan
Data；
6. swrite is called to carry out file write operations, this operating process needs after the rowkey prefixes that step 4 generates
Additional record indexes, and is that value is stored into HBASE with file record as rowkey；
7. sclose is called to carry out file close operation, this operating process then needs closing step 4 to beat if read mode
The scanner opened then needs to call sflush interfaces if write mode, carries out HBASE and submits operation, guarantees data security
Property；
8. calling sclosedir into column catalogue shutoff operation；
9. system discharges sdestroy.
The data storage characteristics of present invention combination traditional file systems and HBASE file system, in a distributed manner internal storage data
Library is secondary storage medium, the storage relationship of file and catalogue is stored in distributed memory in a recursive manner, minimum is deposited
Storage unit is file, single file or catalogue has unique ID to identify in distributed memory library, and single file or catalogue are being divided
There are fileinfo state, file data to be stored in HBASE in cloth memory bank, minimum memory unit is record, rowkey's
Organizational form is " file unique index inverted order " plus record unique index, and value is file data record.
Memory bank is secondary storage medium in a distributed manner, and the storage relationship of file-level catalogue is stored in point in a recursive manner
In cloth memory bank；
Minimum memory unit is file in distributed memory, is had in single file or catalogue redistribution formula memory bank unique
ID is identified；
File data record is stored in the form of key-value in HBASE, and minimum memory unit is record, rowkey
Organizational form be " file unique index inverted order " plus record unique index, value be file data record；
When carrying out opening directory operation, the correspondence for reading catalogue and file index in distributed memory library is needed, is looked into
Look for the All Files and catalogue under current directory；
When carrying out File read operation, the status information for reading file in distributed memory library is needed, and obtained from HBASE
File data is taken to record；
When carrying out file write operations, the status information for reading file in distributed memory library is needed, and by file data
HBASE is written, and updates the status information of file in distributed memory library；
In the case where file is write mode, needs to carry out sflush operations to HBASE write-ins end when closing file, ensure
The integrality of HBASE data；
When carrying out file deletion, need to change corresponding file status information in distributed memory library, it is invalid to make it
State is subsequently carried out the delete operation of corresponding data in HBASE by auxiliary tool.
It is the specific embodiment of the present invention below：
Operation layer needs that a file is read and stored into Virtual File System, it is assumed that the target directory of file be/
Test, source filename are known as test.txt, directory file name store.txt；
Initialization and the connection of HBASE file system and the connection of memory bank；
Sopendir is called to open the catalogue/test to be operated；
It calls sreaddir to read the file or directory information opened in catalogue, reads file by test.txt；
Sopen read modes are called to open file/test/test.txt；
Sopen write modes are called to open file/test/store.txt；
Call the data content in sread readings/test/test.txt；
Call swrite the content read is written to/test/store.txt in；
Sclose is called to close file/test/test.txt；
Sclose is called to close file/test/store.txt；
Call sclosedir shutoff operation catalogues；
Call sdestory release HBASE connections and memory bank connection；
After the completion of aforesaid operations call, there is/related the rope of test/store.txt this file in distributed memory library
Fuse ceases and file status generates, and a batch record is stored in HBASE, these records belong to/test/store.txt.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of implementation method of the Virtual File System based on HBASE, which is characterized in that specifically include following steps：
Step 1：Initialization is carried out to Virtual File System with distributed memory library to connect；
Step 2：Catalogue is opened, reads the directory information stored in distributed memory library, and by the All Files and son under catalogue
Catalogue is loaded into memory；
Step 3：Catalogue is read, and the All Files being loaded into memory and subdirectory are sequentially returned successively；
Step 4：The file in distributed memory library is opened, reading data are obtained from HBASE or stores data into HBASE
In；
Step 5：Execute file close operation；
Step 6：Catalogue is closed, is terminated；
Wherein, the step 4 specifically includes following steps：
Step 4.1：Judge whether current operation is read mode, if so, executing step 4.2；Otherwise, step 4.4 is executed；
Step 4.2：The corresponding unique ID of locating file from distributed memory library opens scanner, is generated using this ID
Rowkey prefixes carry out HBASE table scans, obtain scan data；
Step 4.3：Scan data is read, step 5 is executed；
Step 4.4：It is currently write mode, unique ID is generated to data in distributed memory library, and carry out HBASE opening tables
Operation, the ID for controlling generation generate corresponding rowkey prefixes；
Step 4.5：Will additional index after rowkey prefixes, indexed as rowkey with this, be keyword by data using file record
It stores in HBASE, executes step 5.
2. a kind of implementation method of Virtual File System based on HBASE according to claim 1, which is characterized in that institute
It states step 5 and specifically includes following steps：
Step 5.1：Whether judgment step 4 executes read mode, if so, executing step 5.2；Otherwise, step 5.3 is executed；
Step 5.2：The scanner opened in step 4.2 is closed, step 6 is executed；
Step 5.3：Refresh interface is called, HBASE is carried out and operation, assuring data security is submitted to execute step 6.
3. a kind of implementation method of Virtual File System based on HBASE according to claim 1, which is characterized in that institute
It states the index relative of file and catalogue in step 1 to be stored in distributed memory library, Virtual File System and distributed memory library
Corresponding directory index relationship can be obtained after establishing connection.
4. a kind of implementation method of Virtual File System based on HBASE according to claim 1, which is characterized in that institute
When stating opening catalogue in step 2, the correspondence for reading catalogue and file index in distributed memory library is needed, current mesh is searched
All Files and subdirectory under record.
5. a kind of implementation method of Virtual File System based on HBASE according to claim 1, which is characterized in that institute
When stating progress file reading in step 4.2, the status information for reading file in distributed memory library is needed, and obtained from HBASE
File data is taken to record.
6. according to a kind of implementation method of the Virtual File System based on HBASE of claim 1-5 any one of them, feature
It is, when carrying out file deletion, need to change corresponding file status information in distributed memory library, it is invalid state to make it,
The delete operation of corresponding data in HBASE is subsequently carried out by auxiliary tool.
7. a kind of Virtual File System based on HBASE, which is characterized in that open module including link block, catalogue, catalogue is read
Modulus block, File Open module, closing of a file module and catalogue closedown module；
The link block is connected for carrying out initialization with distributed memory library to Virtual File System；
The catalogue opens module and is used to open catalogue, reads the directory information stored in distributed memory library, and will be under catalogue
All Files and subdirectory be loaded into memory；
The catalogue read module sequentially returns the All Files being loaded into memory and subdirectory for reading catalogue successively
Go back to distributed memory library；
The File Open module is used to open the file in distributed memory library, and data are read from HBASE or deposit data
It stores up in HBASE；
The closing of a file module is for executing file close operation；
The catalogue closedown module terminates for closing catalogue；
Wherein, the File Open module includes mode deciding module, read module and writing module；
The mode deciding module is for judging whether current operation is read mode, if so, triggering read module；Otherwise,
Trigger writing module；
The read module is used for the corresponding unique ID of locating file from distributed memory library, opens scanner, utilizes this ID
It generates rowkey prefixes and carries out HBASE table scans, obtain scan data；Read scan data；
Said write module is used to generate unique ID to data in distributed memory library, and carries out HBASE and open table handling, control
The ID that system generates generates corresponding rowkey prefixes；By additional index after rowkey prefixes, indexed for rowkey, with file with this
Keyword is recorded as to store data into HBASE.
8. a kind of Virtual File System based on HBASE according to claim 7, which is characterized in that the catalogue is opened
When opening catalogue in module, the correspondence for reading catalogue and file index in distributed memory library is needed, current directory is searched
Under All Files and subdirectory；When carrying out file reading in the read module, need to read file in distributed memory library
Status information, and from HBASE obtain file data record.
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| CN101398824A (en) * | 2007-09-26 | 2009-04-01 | 新奥特硅谷视频技术有限责任公司 | Method for implementing data storage by virtual file systems technology after processing |
| CN103116618A (en) * | 2013-01-28 | 2013-05-22 | 南开大学 | Telefile system mirror image method and system based on lasting caching of client-side |
| CN104462185A (en) * | 2014-10-13 | 2015-03-25 | 南京邮电大学 | Digital library cloud storage system based on mixed structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101398824A (en) * | 2007-09-26 | 2009-04-01 | 新奥特硅谷视频技术有限责任公司 | Method for implementing data storage by virtual file systems technology after processing |
| CN103116618A (en) * | 2013-01-28 | 2013-05-22 | 南开大学 | Telefile system mirror image method and system based on lasting caching of client-side |
| CN104462185A (en) * | 2014-10-13 | 2015-03-25 | 南京邮电大学 | Digital library cloud storage system based on mixed structure |
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