CN107609140A - A kind of method and device of distributive catalogue of document system file access - Google Patents
A kind of method and device of distributive catalogue of document system file access Download PDFInfo
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- CN107609140A CN107609140A CN201710855307.3A CN201710855307A CN107609140A CN 107609140 A CN107609140 A CN 107609140A CN 201710855307 A CN201710855307 A CN 201710855307A CN 107609140 A CN107609140 A CN 107609140A
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Abstract
The invention discloses a kind of method of distributive catalogue of document system file access, multiple file access requests are received, the burst according to where the file access request determines multiple files to be visited respectively；The access response of each file to be visited is simultaneously provided by the metadata node where each burst, the burst is the burst for preassigning the metadata node, because each burst is located at each different metadata node, so the access to the file to be visited in each burst is can be concurrent, so as to improve the access efficiency of file in catalogue, strengthen the performance of whole file system, the invention also discloses a kind of device of distributive catalogue of document system file access, has above-mentioned beneficial effect.
Description
Technical field
The present invention relates to distributed file system field, more particularly to a kind of distributive catalogue of document system file access
Method and device.
Background technology
Distributed file system, refer to that the physical memory resources of file system management are not necessarily connected directly between local node
On, but be connected by computer network with node.The design of distributed file system is based on client-server model.
In distributed file system application, some service scripts are only stored in a catalogue.Accumulate over a long period under this catalogue
Quantity of documents will reach million grades, millions it is even more more.Because user is needed to mesh in the file in accessing catalogue
All Files under record is cached, and causes access interim card occur.
Typically by way of catalogue is split as into multiple bursts, when user accesses catalogue, it is only necessary to cache in burst
File, so as to lift the access performance of catalogue, but the limited capacity that this mode is lifted, when quantity of documents continues to increase
Greatly, when reaching certain scope, a good service performance can not still be provided the user.
The content of the invention
It is an object of the invention to provide a kind of method of distributive catalogue of document system file access, solve due to catalogue
Middle quantity of documents excessively causes model essay file the problem of interim card occur, realizes and efficiently quickly accesses file, improves file system
The performance of system.
It is a further object of the present invention to provide a kind of device of distributive catalogue of document system file access.
In order to solve the above technical problems, the present invention provides a kind of method of distributive catalogue of document system file access, can
With including：
Multiple file access requests are received, according to where the file access request determines multiple files to be visited respectively
Burst；The access response of each file to be visited is simultaneously provided by the metadata node where each burst；Its
In, the burst is the burst for preassigning the metadata node, and the burst is assigned into the metadata node
Process is：
Catalogue where the file to be visited is split as multiple bursts, each burst is assigned to multiple described
In metadata node, multiple files to be visited are located in multiple bursts.
Wherein, after the catalogue where by the file to be visited is split as multiple bursts, in addition to：
Detect the temperature of the burst in the catalogue；
Judge whether the temperature of the burst exceedes preset heat threshold value, refer to each burst if it is, performing
Operation in fixed multiple metadata nodes.
Wherein, the catalogue by where the file to be visited, which is split as multiple bursts, includes：
The first request to create is received, the establishment file under the catalogue；Detect the file under catalogue described in current time
Whether quantity exceedes default file quantity, if it is, the catalogue is split as into multiple bursts, and by the file under the catalogue
Store into multiple bursts.
Wherein, the file by under the catalogue is stored to multiple bursts and included：
File under the catalogue is stored into each burst by hash algorithm.
Wherein, after the file under the catalogue is stored into multiple bursts, in addition to：
The second request to create is received, the establishment file under the burst of the catalogue；Detect in burst described in current time
Whether the quantity of file exceedes default file quantity, if it is, the burst is split as into more sub- bursts, and by the burst
In file store at most individual sub- burst.
Wherein, it is described each burst is assigned to multiple metadata nodes to include：
Each Cell round Robin is specified into multiple metadata nodes.
A kind of device of distributive catalogue of document system file access provided by the invention, including：
Access modules, for receiving multiple file access requests, determined according to the file access request multiple to be visited
Burst where file difference；Each file to be visited is simultaneously provided by the metadata node where each burst
Access response；Wherein, the burst preassigns the burst of the metadata node for fractionation memory module；
The fractionation memory module, will be each for the catalogue where the file to be visited to be split as into multiple bursts
The burst is specified in multiple metadata nodes, and multiple files to be visited are located in multiple bursts.
Wherein, in addition to：
Temperature detection module, after being split as multiple bursts for the catalogue where by the file to be visited, detection
The temperature of each burst of catalogue；Judge whether the temperature of the burst exceedes preset heat threshold value, if it is, performing general
Each burst specifies the operation in multiple metadata nodes.
Wherein, the fractionation memory module is specifically used for：
The first request to create is received, the establishment file under the catalogue, detects file described in current time under catalogue
Whether quantity exceedes default file quantity, if it is, the catalogue is split as into multiple bursts, and by the file under the catalogue
Store into multiple bursts.
Wherein, the fractionation memory module is additionally operable to：
The second request to create is received, the establishment file under the burst of the catalogue；Detect in burst described in current time
Whether the quantity of file exceedes default file quantity, if it is, the burst is split as into more sub- bursts, and by the burst
In file store at most individual sub- burst.
The method of a kind of distributive catalogue of document system file access provided by the present invention, by the way that catalogue is split as not
Same burst, then each burst is assigned to each different metadata node, when user needs to carry out the file in catalogue
During access, as long as metadata node corresponding to burst where finding file.Because the burst under same catalogue is position
In each different metadata node, when multiple users be present and need to conduct interviews to the file on multiple different bursts, by
It is different in the metadata node for being responsible for each burst, so the access of multiple users synchronously can be accessed concurrently, without by
It is individual to wait in line, so as to accelerate the access efficiency to the file under the catalogue, lift access performance.
Therefore, method provided by the present invention, it is possible to increase the access performance and user's access efficiency of catalogue, lift user
Usage experience.
Present invention also offers a kind of device of distributive catalogue of document system file access, has above-mentioned beneficial effect.
Brief description of the drawings
, below will be to embodiment or existing for the clearer explanation embodiment of the present invention or the technical scheme of prior art
The required accompanying drawing used is briefly described in technology description, it should be apparent that, drawings in the following description are only this hair
Some bright embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with root
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of flow chart of the embodiment that catalogue file accesses in distributed file system；
Fig. 2 is the structured flowchart of the device of distributive catalogue of document system file access provided in an embodiment of the present invention.
Embodiment
In distributed file system, a catalogue can only belong to a metadata node, when user needs to access mesh
Record under file when, it is necessary to all be cached to file all under the catalogue, due to typically having in each metadata node
Multiple catalogues, and heap file is stored with catalogue, do not ensure that the file in all catalogues is all buffered, if do not delayed
Depositing just needs storage medium to go to obtain, so as to access interim card occur.
After target is split into multiple bursts, during to file access, it is only necessary to the text of burst where caching file to be visited
Part, this improves the access performance of file system to a certain extent, with the increase of quantity of documents, although to each text
, it is necessary to which the file of caching is reduced when part accesses, but due in catalogue file it is excessive, and nearly all file can be accessed
Arrive, when needing to access file, the access request of the file in same metadata node needs to be lined up response one by one, institute
By only by catalogue be split as burst it is this in a manner of lifting file system limited capacity, therefore technical side provided by the invention
In case, each burst is assigned to each different metadata node, then the file between the burst in each metadata node
Just can concurrently it be accessed, so as to improve the performance of file system.
In order that those skilled in the art more fully understand the present invention program, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.Obviously, described embodiment is only part of the embodiment of the present invention, rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of protection of the invention.
The flow chart for the embodiment that catalogue file accesses in a kind of distributed file system provided by the invention, such as
Shown in Fig. 1, this method can include：
Step S101：Catalogue is split as multiple bursts, the file in catalogue is stored into each burst, by each point
Piece is assigned in multiple metadata nodes.
Step S102：Receive multiple file access requests.
Step S103：Burst according to where the file access request determines multiple files to be visited respectively.
Step S104：Each file to be visited is simultaneously provided by the metadata node where each burst
Access response.
It should be noted that can be the burst for preassigning metadata node for each burst.In each burst
After preassigning each metadata node, subsequently again to the file access in catalogue when, where finding corresponding burst
Metadata node.When multiple users synchronously send multiple access requests, can be determined each to wait to visit according to access request
Ask file, the catalogue according to belonging to each file to be visited determine file to be visited belonging to burst, so that it is determined that management file
Metadata node, for the file positioned at different metadata nodes, because the management between each metadata node to file
Function can be separate, then the access between each file can be realized concurrently.
Based on above-described embodiment, it is contemplated that after catalogue is split as multiple bursts, if the file in the catalogue is interviewed
The frequency asked is relatively low, that is to say, that the catalogue can just be provided the user into a relatively good access after fractionation
Can, at this moment with regard to being migrated without to the burst in catalogue specify to other metadata nodes, and with file in catalogue
The increase of quantity, either in catalogue during some file access frequency increases or other reasonses, the burst in catalogue is caused to access
Frequency increase, so as to provide the user a good access performance, can be assigned to other metadata nodes by burst again.
Therefore, in the another specific embodiment of the present invention, can include：
After the catalogue where by the file to be visited is split as multiple bursts, burst in the catalogue is detected
Temperature；Judge whether the temperature of the burst exceedes preset heat threshold value, if it is, performing each burst is specified more
Operation in the individual metadata node.
It should be noted that after catalogue is split as multiple bursts, each burst is assigned to each metadata node
Before, user can conduct interviews to the file in catalogue, at this moment can regularly detect the accessed temperature of each burst, if
Reach certain heat degree threshold, burst is being assigned to other metadata nodes, is being assigned to other metadata sections herein
The burst of point can be tear open to obtain more than the burst of heat degree threshold or same catalogue only for temperature all minutes
Piece, to not inevitable requirement in this present invention, but a principle for needing to follow is that temperature at least is exceeded into temperature threshold
The burst of value is assigned to other metadata nodes.
Based on above-described embodiment, it is contemplated that the quantity of documents only just meeting when needing to create new file in each catalogue
Increase, incident file access can also increase, therefore in the another specific embodiment of the present invention, can include：
The first request to create is received, the establishment file under the catalogue；Detect the file under catalogue described in current time
Whether quantity exceedes default file quantity, if it is, the catalogue is split as into multiple bursts, and by the file under the catalogue
Store into multiple bursts.
It should be noted that the file in establishment file can be that in general file can also be this spy of subdirectory here
The file of different form., can be according to the accessed situation of the catalogue for storing different business file for default file quantity
Depending on, and for the quantity that burst is split, it can also be set according to actual conditions, increase faster mesh for related service file
Record, what can be tried one's best splits more burst, conversely, catalogue can be then split as to less burst.Mesh is detected for example, working as
The quantity of file in record is more than 40000, then catalogue can be split as to 4 bursts, and the quantity of file is in each burst
10000.
Furthermore it is also possible to detected for the temperature of catalogue, when detecting that some catalogue temperature is higher, but the number of file
When amount is not reaching to default file quantity, catalogue can also be split, that is to say that the condition that catalogue is split is quantity of documents
Reaching default file quantity, file access temperature is higher either in catalogue, meets any one in both, all catalogue is carried out
Split.
Based on above-described embodiment, it is contemplated that if in each burst that same catalogue is split, the quantity difference of file is very
Greatly, it is too high to be likely to result in some burst temperature, and the situation that other burst temperatures are relatively low, even if being finally assigned to different members
Back end, also or influence can be brought on the access of the file in the burst, therefore, another specific embodiment of the invention
In, it can include：
File under the catalogue is stored into each burst by hash algorithm.
Specifically, hash algorithm has the characteristic of evenness, it can ensure that the quantity of documents in each burst is roughly equal,
But assign to the file in catalogue in each burst, other modes can also be used to distribute, such as divide in a manner of poll
Match somebody with somebody, or precalculated general act amount and burst quantity, it is determined that the general quantity of the file after dividing equally in each burst, is pressed
The quantity is distributed, and can also realize the purpose of the present invention.
Further, since quantity of documents is generally equalized in each burst, then the access temperature of each file is general also substantially
It is identical, therefore, when the temperature for detecting in catalogue burst exceedes heat degree threshold, it is possible to by the burst in the catalogue
Other metadata nodes are all assigned to, this is not essential features of the invention certainly.
Based on above-described embodiment, after splitting into multiple bursts due to catalogue, still suffering from new file needs to create, then
With regard to needing to create new file in burst under the catalogue, then the quantity of documents in each burst can also increase, for not shadow
The access of file in burst is rung, can also be included in another specific embodiment of the invention：
The second request to create is received, the establishment file under the burst of the catalogue；Detect in burst described in current time
Whether the quantity of file exceedes default file quantity, if it is, the burst is split as into more sub- bursts, and by the burst
In file store at most individual sub- burst.
It should be noted that not distinguished necessarily between the first request to create and the second request to create, simply one is
The request that its is proposed before catalogue fractionation, one is request after catalogue fractionation.And burst is split as sub- burst, burst
It is functionally identical with sub- burst, for sub- burst if temperature is too high, other metadata sections can also be assigned to
Point.
Based on above-mentioned any embodiment, in order to avoid what the burst that catalogue is split excessively was concentrated is located at a metadata node
It is interior, and the meaning that burst is assigned to different metadata nodes is lost, in another specific embodiment of the invention, it can wrap
Include：
Each Cell round Robin is specified into multiple metadata nodes.
Specifically, it is in order to which each burst is assigned in each metadata node, but if there is certain that poll, which is specified,
A little special files, access frequency is very high can be individually assigned to the burst where this document at some specific metadata section
Point, to avoid the access on alternative document from bringing influence.
The device of distributive catalogue of document system file access provided in an embodiment of the present invention is introduced below, hereafter
The device of the distributive catalogue of document system file access of description and above-described distributive catalogue of document system file access
Method can be mutually to should refer to.
Fig. 2 is the structured flowchart of the device of distributive catalogue of document system file access provided in an embodiment of the present invention, is joined
It can include according to the device of Fig. 2 distributive catalogue of document system file accesss：
Access modules 100, for receiving multiple file access requests, determine multiple to wait to visit according to the file access request
Burst where asking file respectively；Each text to be visited is simultaneously provided by the metadata node where each burst
The access response of part；Wherein, the burst preassigns the burst of the metadata node for fractionation memory module 200；
The fractionation memory module 200, will be each for the catalogue where the file to be visited to be split as into multiple bursts
The individual burst is specified in multiple metadata nodes, and multiple files to be visited are located in multiple bursts.
As a kind of embodiment, application program entering device provided by the present invention can further include：
Temperature detection module, after being split as multiple bursts for the catalogue where by the file to be visited, detection
The temperature of each burst of catalogue；Judge whether the temperature of the burst exceedes preset heat threshold value, if it is, performing general
Each burst specifies the operation in multiple metadata nodes.
Preferably, the fractionation memory module is specifically used for：
The first request to create is received, the establishment file under the catalogue, detects file described in current time under catalogue
Whether quantity exceedes default file quantity, if it is, the catalogue is split as into multiple bursts, and by the file under the catalogue
Store into multiple bursts.
As a kind of embodiment, application program entering device provided by the present invention can further include,
The fractionation memory module is additionally operable to：
The second request to create is received, the establishment file under the burst of the catalogue；Detect in burst described in current time
Whether the quantity of file exceedes default file quantity, if it is, the burst is split as into more sub- bursts, and by the burst
In file store at most individual sub- burst.
The device of the distributive catalogue of document system file access of the present embodiment is used to realize foregoing distributed field system
The method that system catalogue file accesses, therefore the embodiment in the device of distributive catalogue of document system file access is visible
The embodiment part of the method for distributive catalogue of document system file access hereinbefore, for example, access modules 100, for reality
Step S102, S 103 and S104 in the method for existing above-mentioned distributive catalogue of document system file access, splits memory module 200,
For realizing step S101 in the above method, so, its embodiment is referred to corresponding various pieces embodiment
Description, will not be repeated here.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be with it is other
The difference of embodiment, between each embodiment same or similar part mutually referring to.For dress disclosed in embodiment
For putting, because it is corresponded to the method disclosed in Example, so description is fairly simple, related part is referring to method part
Explanation.
Professional further appreciates that, with reference to the unit of each example of the embodiments described herein description
And algorithm steps, can be realized with electronic hardware, computer software or the combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software, the composition and step of each example are generally described according to function in the above description.These
Function is performed with hardware or software mode actually, application-specific and design constraint depending on technical scheme.Specialty
Technical staff can realize described function using distinct methods to each specific application, but this realization should not
Think beyond the scope of this invention.
Directly it can be held with reference to the step of method or algorithm that the embodiments described herein describes with hardware, processor
Capable software module, or the two combination are implemented.Software module can be placed in random access memory (RAM), internal memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
The method to distributive catalogue of document system file access provided by the present invention and device have been carried out in detail above
It is thin to introduce.Specific case used herein is set forth to the principle and embodiment of the present invention, and above example is said
It is bright to be only intended to help the method and its core concept for understanding the present invention.It should be pointed out that the ordinary skill for the art
For personnel, under the premise without departing from the principles of the invention, some improvement and modification, these improvement can also be carried out to the present invention
Also fallen into modification in the protection domain of the claims in the present invention.
Claims (10)
- A kind of 1. method of distributive catalogue of document system file access, it is characterised in that：Multiple file access requests are received, point according to where the file access request determines multiple files to be visited respectively Piece；The access response of each file to be visited is simultaneously provided by the metadata node where each burst；Wherein, the burst is the burst for preassigning the metadata node, and the burst is assigned into the metadata The process of node is：Catalogue where the file to be visited is split as multiple bursts, each burst is assigned to multiple first numbers According in node, multiple files to be visited are located in multiple bursts.
- 2. according to the method for claim 1, it is characterised in that the catalogue where by the file to be visited is split as more After individual burst, in addition to：Detect the temperature of the burst in the catalogue；Judge whether the temperature of the burst exceedes preset heat threshold value, if it is, performing each burst is specified more Operation in the individual metadata node.
- 3. according to the method for claim 2, it is characterised in that the catalogue by where the file to be visited is split as Multiple bursts include：The first request to create is received, the establishment file under the catalogue；Whether the quantity of the file described in detection current time under catalogue exceedes default file quantity, if it is, by the catalogue Multiple bursts are split as, and the file under the catalogue is stored into multiple bursts.
- 4. according to the method for claim 3, it is characterised in that the file by under the catalogue is stored to multiple bursts Include：File under the catalogue is stored into each burst by hash algorithm.
- 5. according to the method for claim 3, it is characterised in that stored by the file under the catalogue into multiple bursts Afterwards, in addition to：The second request to create is received, the establishment file under the burst of the catalogue；Whether the quantity of the file described in detection current time in burst exceedes default file quantity, if it is, by the burst More sub- bursts are split as, and the file in the burst is stored at most individual sub- burst.
- 6. according to the method described in any one of claim 1 to 5, it is characterised in that it is described each burst is assigned to it is more The individual metadata node includes：Each Cell round Robin is specified into multiple metadata nodes.
- A kind of 7. device of distributive catalogue of document system file access, it is characterised in that including：Access modules, for receiving multiple file access requests, multiple files to be visited are determined according to the file access request Burst where respectively；The visit of each file to be visited is simultaneously provided by the metadata node where each burst Ask response；Wherein, the burst preassigns the burst of the metadata node for fractionation memory module；The fractionation memory module, will be each described for the catalogue where the file to be visited to be split as into multiple bursts Burst is specified in multiple metadata nodes, and multiple files to be visited are located in multiple bursts.
- 8. device according to claim 7, it is characterised in that also include：Temperature detection module, after being split as multiple bursts for the catalogue where by the file to be visited, described in detection The temperature of each burst of catalogue；Judge whether the temperature of the burst exceedes preset heat threshold value, will be each if it is, performing The burst specifies the operation in multiple metadata nodes.
- 9. device according to claim 8, it is characterised in that the fractionation memory module is specifically used for：The first request to create is received, the establishment file under the catalogue, detects the quantity of the file described in current time under catalogue Whether exceed default file quantity, if it is, the catalogue is split as into multiple bursts, and the file under the catalogue is stored Into multiple bursts.
- 10. device according to claim 9, it is characterised in that the fractionation memory module is additionally operable to：The second request to create is received, the establishment file under the burst of the catalogue；Detect the file in burst described in current time Quantity whether exceed default file quantity, if it is, the burst is split as into more sub- bursts, and by the burst File is stored at most individual sub- burst.
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| CN110389940A (en) * | 2019-07-19 | 2019-10-29 | 苏州浪潮智能科技有限公司 | A kind of data balancing method, device and computer readable storage medium |
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