CN106980697A - A kind of catalogue distribution querying method and device - Google Patents
A kind of catalogue distribution querying method and device Download PDFInfo
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- CN106980697A CN106980697A CN201710224344.4A CN201710224344A CN106980697A CN 106980697 A CN106980697 A CN 106980697A CN 201710224344 A CN201710224344 A CN 201710224344A CN 106980697 A CN106980697 A CN 106980697A
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- 235000013399 edible fruits Nutrition 0.000 claims description 2
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- 230000004048 modification Effects 0.000 description 1
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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
- G06F16/10—File systems; File servers
- G06F16/14—Details of searching files based on file metadata
- G06F16/148—File search processing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
- G06F9/5083—Techniques for rebalancing the load in a distributed system
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Abstract
The invention discloses a kind of catalogue distribution querying method and device, wherein this method includes：The query statement that client is sent is received, and obtains the directory information carried in query statement；Directory information is sent into each meta data server into metadata server cluster, the subtree root having under directory information correspondence assigned catalogue and/or the assigned catalogue itself is whether there is to indicate that each meta data server is inquired about；The result obtained by the inquiry of each meta data server is obtained, and the result is aggregated into total Query Result and is back to client, to know each affiliated meta data server of subtree root under assigned catalogue and the assigned catalogue for use by total Query Result.So as to accurately obtain the distribution situation of all subtree roots under assigned catalogue and the catalogue in real time by one query, convenient adjustment load in time, ensure the load balancing of metadata server cluster, improve the overall performance and response speed of metadata server cluster.
Description
Technical field
The present invention relates to cluster file system technical field, more specifically to a kind of catalogue be distributed querying method and
Device.
Background technology
For all operations of file metadata, rung by meta data server in cluster file system
It should handle, after cluster scale becomes big, single metadata server is not enough to support the response processing of message, therefore increase is
Multiple meta data servers handle request response as cluster.It is difficult to ensure that subtree root between each meta data server
Load balance, the large-scale catalogue of large amount of small documents is stored especially for some, it is difficult to accomplish load balancing, it is therefore desirable to accurate
The distribution situation for all subtree roots really inquired about under this catalogue, carries out load switching, reaches load balance.
In summary, how to provide it is a kind of can accurately under query directory the distribution situation of all subtree roots technology
Scheme, is current those skilled in the art's urgent problem to be solved.
The content of the invention
It is an object of the invention to provide a kind of catalogue distribution querying method and device, accurately to realize all sons under catalogue
The inquiry of tree root catalogue distribution situation.
To achieve these goals, the present invention provides following technical scheme：
A kind of catalogue is distributed querying method, including：
The query statement that client is sent is received, and obtains the directory information carried in the query statement；
The directory information is sent into each meta data server into metadata server cluster, to indicate each institute
State meta data server and inquire about the son that itself whether there is and have under the directory information correspondence assigned catalogue and/or the assigned catalogue
Tree root catalogue；
The result obtained by each meta data server inquiry is obtained, and the result is aggregated into total Query Result and is returned
To the client, to know that subtree root is each under the assigned catalogue and the assigned catalogue for use by total Query Result
From affiliated meta data server.
It is preferred that, before the directory information to send to each meta data server into metadata server cluster,
Also include：
Judge that the directory information correspondence assigned catalogue whether there is in metadata server cluster, if it is, holding
Row is described the step of the directory information to be sent to each meta data server into the metadata server cluster, if
It is no, then to the client output error message.
It is preferred that, after the directory information to send to each meta data server into metadata server cluster,
Also include：
If not receiving the result of any piece of metadata server return after preset time period, to correspondence metadata
Server sends the directory information again.
It is preferred that, determine do not received after preset time period any piece of metadata server return result after,
Also include：
The meta data server corresponding informance that the result of its return will not be received is sent to the client.
It is preferred that, the result is aggregated into total Query Result and is back to the client, including：
The result is aggregated into total Query Result and is back to the client to indicate the client to total inquiry
As a result shown.
A kind of catalogue is distributed inquiry unit, including：
Receiving module, is used for：The query statement that client is sent is received, and obtains the catalogue carried in the query statement
Information；
Enquiry module, is used for：The directory information is sent to each Metadata Service into metadata server cluster
Device, with indicate each meta data server inquire about itself with the presence or absence of have directory information correspondence assigned catalogue and/or
Subtree root under the assigned catalogue；
Module is returned, is used for：The result obtained by each meta data server inquiry is obtained, and the result is aggregated into
Total Query Result is back to the client, to know the assigned catalogue and the assigned catalogue for use by total Query Result
Lower subtree root each belonging to meta data server.
It is preferred that, in addition to：
Judge module, for the directory information to be sent to each meta data server into metadata server cluster
Before, judge that the directory information correspondence assigned catalogue whether there is in metadata server cluster, if it is, performing institute
The step of directory information is sent into each meta data server into the metadata server cluster is stated, if not,
Then to the client output error message.
It is preferred that, in addition to：
First sending module, for the directory information to be sent to the clothes of each metadata into metadata server cluster
It is engaged in after device, if the result of any piece of metadata server return is not received after preset time period, to corresponding element number
Send the directory information again according to server.
It is preferred that, in addition to：
Second sending module, is used for：Determine and do not receive the return of any piece of metadata server after preset time period
Result after, the meta data server corresponding informance of result that will not receive its return is sent to the client.
It is preferred that, the return module includes：
Display unit, is used for：The result is aggregated into total Query Result and is back to the client to indicate the client
End is shown to total Query Result.
The invention provides a kind of catalogue distribution querying method and device, wherein this method includes：Client is received to send
Query statement, and obtain the directory information carried in the query statement；The directory information is sent to Metadata Service
Each meta data server in device cluster, to indicate that each meta data server inquires about itself with the presence or absence of there is the mesh
Record the subtree root under information correspondence assigned catalogue and/or the assigned catalogue；Obtain each meta data server inquiry
The result of gained, and the result is aggregated into total Query Result is back to the client, with for use by total Query Result
Meta data server belonging to knowing subtree root under the assigned catalogue and the assigned catalogue each.Skill disclosed in the present application
In art scheme, the directory information for carrying query statement under the triggering for the query statement that client is sent is sent to metadata clothes
The each meta data server being engaged in device cluster, itself whether there is and catalogue with enabling each meta data server to inquire about
Subtree root under information correspondence assigned catalogue and/rear assigned catalogue, so as to the knot returned by each meta data server
Fruit knows which meta data server the subtree root under assigned catalogue and assigned catalogue is belonging respectively to, so that by once looking into
The accurate distribution situation for obtaining all subtree roots under assigned catalogue and the catalogue in real time is ask, conveniently adjustment load in time,
Ensure the load balancing of metadata server cluster, improve the overall performance and response speed of metadata server cluster.
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
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is distributed the flow chart of querying method for a kind of catalogue provided in an embodiment of the present invention；
Fig. 2 is distributed the structural representation of inquiry unit for a kind of catalogue provided in an embodiment of the present 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 every 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.
, can be with referring to Fig. 1, it illustrates the flow chart that a kind of catalogue provided in an embodiment of the present invention is distributed querying method
Comprise the following steps：
S11：The query statement that client is sent is received, and obtains the directory information carried in query statement.
Can be to client when user needs to inquire about the distribution of all subtree roots under assigned catalogue and assigned catalogue
Input inquiry is instructed, and the specified mesh of inquiry in need can be carried to indicate that client is transmitted to query statement, in inquiry
The directory information of record and the purpose client information of transmission etc., other settings can also be carried out according to actual needs, at this certainly
Within the protection domain of invention.In addition, inquiry mode can also be included in the query statement, namely query directory information correspondingly refers to
Determine the distribution situation of all subtree roots under catalogue and the assigned catalogue.
S12：Directory information is sent into each meta data server into metadata server cluster, to indicate each member
Data server inquires about the subtree root mesh that itself whether there is and have under directory information correspondence assigned catalogue and/or the assigned catalogue
Record.
Directory information is sent to each meta data server or the inquiry request for carrying directory information is sent out
Each meta data server is delivered to, each meta data server is got after directory information, can be looked into the catalogue of itself storage
Look for the presence or absence of the subtree root under assigned catalogue corresponding with directory information and/or assigned catalogue, if it does not exist, then returning
The server info and the information in the absence of required catalogue of the meta data server can be included in the result returned, if deposited
, then the directory information that can include the server info of the meta data server in the result returned and be stored, certainly
It can also be set according to actual needs, within protection scope of the present invention.
S13：The result obtained by each meta data server inquiry is obtained, and the result is aggregated into total Query Result and is returned
To client, to know under assigned catalogue and the assigned catalogue first number belonging to subtree root is each for use by total Query Result
According to server.
After the result for getting meta data server return, if including the service of correspondence meta data server in the result
Device information, the assigned catalogue that directly can be stored the server info of each meta data server and the meta data server
And/or the directory information of subtree root is aggregated into form etc. under assigned catalogue, if not including correspondence metadata in the result
The server info of server, can determine to send the meta data server of result, and then obtain according to the transmission source of result
The server info of meta data server is taken, and then realizes above-mentioned collect；Certainly other can also be carried out according to actual needs to set
Put, within protection scope of the present invention.Thus, user can directly know assigned catalogue and the catalogue according to summarized results
Under all subtree roots distribution.
In technical scheme disclosed in the present application, query statement is carried under the triggering for the query statement that client is sent
Directory information sends each meta data server into metadata server cluster, to enable each meta data server
Itself is inquired about with the presence or absence of subtree root under assigned catalogue corresponding with directory information and/rear assigned catalogue, so as to by every
The result that individual meta data server is returned knows which first number the subtree root under assigned catalogue and assigned catalogue is belonging respectively to
According to server, so as to accurately obtain the distribution of all subtree roots under assigned catalogue and the catalogue in real time by one query
Situation, convenient adjustment load in time, it is ensured that the load balancing of metadata server cluster, improves metadata server cluster
Overall performance and response speed.
A kind of catalogue distribution querying method provided in an embodiment of the present invention, directory information is sent to meta data server collection
Before each meta data server in group, it can also include：
Judge directory information correspondence assigned catalogue whether there is in metadata server cluster, if it is, perform general
The step of directory information sends each meta data server into metadata server cluster, if it is not, then defeated to client
Malfunction false information.
Prejudge directory information correspondence assigned catalogue to whether there is in metadata server cluster, if it does, holding again
The steps such as row inquiry, otherwise, then to client output error message, thereby, it is possible to avoid in metadata server cluster not
There is a situation where that assigned catalogue but wastes the time of each meta data server and resource carries out relevant inquiring step and occurred.Wherein
Error message can be correspondence error message set in advance, and user can then know first number by the error message of client
According to assigned catalogue is not present in server cluster, consequently facilitating the inquiry operation again of user is realized.
A kind of catalogue distribution querying method provided in an embodiment of the present invention, directory information is sent to meta data server collection
After each meta data server in group, it can also include：
If not receiving the result of any piece of metadata server return after preset time period, to correspondence metadata
Server sends directory information again.
Wherein preset time period can be set according to actual needs, if sending out the preset time after directory information
The result of any piece of metadata server return is not received in section, then can primarily determine that the information hair to the meta data server
Failure is sent, then the step of carrying out the above-mentioned information of transmission again, so as to ensure that the smooth realization of inquiry.
A kind of catalogue distribution querying method provided in an embodiment of the present invention, determines and is not received after preset time period
After the result that any piece of metadata server is returned, it can also include：
The meta data server corresponding informance that the result of its return will not be received is sent to client.
, can also be by this yuan of number if not receiving the result of any piece of metadata server return after preset time period
Sent according to server corresponding informance to client, enable a user to know above-mentioned situation, and then facilitated on it is occurred
State malformed queries of situation etc., it is ensured that the smooth realization for the technical scheme that the application is provided.
If not receiving the result of any piece of metadata server return after preset time period, the result is aggregated into
Total Query Result is back to client, can include：
The result is aggregated into total Query Result and is back to client to indicate that client is shown to total Query Result.
Query interface by total summarized results in client is directly shown, enables to user can be by the interface
The result is intuitively rapidly obtained, the operation such as load balancing that user is realized based on the result is facilitated, it is, of course, also possible to objective
Family end carries out voice broadcast etc. to the result, within protection scope of the present invention.
The embodiment of the present invention additionally provides a kind of catalogue distribution inquiry unit, as shown in Fig. 2 can include：
Receiving module 11, is used for：The query statement that client is sent is received, and obtains the catalogue letter carried in query statement
Breath；
Enquiry module 12, is used for：Directory information is sent into each meta data server into metadata server cluster,
With indicate each meta data server inquire about itself with the presence or absence of have directory information correspondence assigned catalogue and/or the assigned catalogue under
Subtree root；
Module 13 is returned, is used for：The result obtained by each meta data server inquiry is obtained, and the result is aggregated into always
Query Result is back to client, to know that subtree root is each under assigned catalogue and the assigned catalogue for use by total Query Result
From affiliated meta data server.
It should be noted that a kind of catalogue distribution inquiry unit provided in an embodiment of the present invention can be with integrated collocation metadata
In the master metadata server of server cluster, thus, by the master metadata server using said apparatus in Metadata Service
It is scheduled in device cluster, obtains the result that correspondence is inquired about.
A kind of catalogue distribution inquiry unit provided in an embodiment of the present invention, can also include：
Judge module, for directory information is sent each meta data server into metadata server cluster it
Before, judge that directory information correspondence assigned catalogue whether there is in metadata server cluster, believe catalogue if it is, performing
The step of breath sends each meta data server into metadata server cluster, if it is not, then to client output error
Information.
A kind of catalogue distribution inquiry unit provided in an embodiment of the present invention, can also include：
First sending module, for directory information to be sent to each meta data server into metadata server cluster
Afterwards, if not receiving the result of any piece of metadata server return after preset time period, taken to correspondence metadata
Business device sends directory information again.
A kind of catalogue distribution inquiry unit provided in an embodiment of the present invention, can also include：
Second sending module, is used for：Determine and do not receive the return of any piece of metadata server after preset time period
Result after, the meta data server corresponding informance of result that will not receive its return is sent to client.
A kind of catalogue distribution inquiry unit provided in an embodiment of the present invention, returning to module can include：
Display unit, is used for：The result is aggregated into total Query Result and is back to client to indicate client to always looking into
Result is ask to be shown.
The explanation of relevant portion refers to of the invention real in a kind of catalogue distribution inquiry unit provided in an embodiment of the present invention
The detailed description of corresponding part in a kind of catalogue distribution querying method of example offer is provided, be will not be repeated here.
The foregoing description of the disclosed embodiments, enables those skilled in the art to realize or using the present invention.To this
A variety of modifications of a little embodiments will be apparent for a person skilled in the art, and generic principles defined herein can
Without departing from the spirit or scope of the present invention, to realize in other embodiments.Therefore, the present invention will not be limited
It is formed on the embodiments shown herein, and is to fit to consistent with features of novelty with principles disclosed herein most wide
Scope.
Claims (10)
1. a kind of catalogue is distributed querying method, it is characterised in that including：
The query statement that client is sent is received, and obtains the directory information carried in the query statement；
The directory information is sent into each meta data server into metadata server cluster, to indicate each member
Data server inquires about the subtree root that itself whether there is and have under the directory information correspondence assigned catalogue and/or the assigned catalogue
Catalogue；
The result obtained by each meta data server inquiry is obtained, and the result is aggregated into total Query Result and is back to institute
Client is stated, to know under the assigned catalogue and the assigned catalogue subtree root each institute for use by total Query Result
The meta data server of category.
2. according to the method described in claim 1, it is characterised in that send the directory information to metadata server cluster
In each meta data server before, in addition to：
Judge that the directory information correspondence assigned catalogue whether there is in metadata server cluster, if it is, performing institute
The step of directory information is sent into each meta data server into the metadata server cluster is stated, if not,
Then to the client output error message.
3. according to the method described in claim 1, it is characterised in that send the directory information to metadata server cluster
In each meta data server after, in addition to：
If not receiving the result of any piece of metadata server return after preset time period, to correspondence Metadata Service
Device sends the directory information again.
4. method according to claim 3, it is characterised in that determine and do not receive any member after preset time period
After the result that data server is returned, in addition to：
The meta data server corresponding informance that the result of its return will not be received is sent to the client.
5. method according to claim 4, it is characterised in that the result is aggregated into total Query Result and is back to the visitor
Family end, including：
The result is aggregated into total Query Result and is back to the client to indicate the client to total Query Result
Shown.
6. a kind of catalogue is distributed inquiry unit, it is characterised in that including：
Receiving module, is used for：The query statement that client is sent is received, and obtains the catalogue letter carried in the query statement
Breath；
Enquiry module, is used for：The directory information is sent into each meta data server into metadata server cluster, with
Indicate each meta data server inquire about itself with the presence or absence of have the directory information correspondence assigned catalogue and/or this specify
Subtree root under catalogue；
Module is returned, is used for：The result obtained by each meta data server inquiry is obtained, and the result is aggregated into always looked into
Ask result and be back to the client, it is sub under the assigned catalogue and the assigned catalogue to know for use by total Query Result
Tree root catalogue each belonging to meta data server.
7. device according to claim 6, it is characterised in that also include：
Judge module, for the directory information is sent each meta data server into metadata server cluster it
Before, judge that the directory information correspondence assigned catalogue whether there is in metadata server cluster, if it is, performing described
The step of directory information is sent into each meta data server into the metadata server cluster, if it is not, then
To the client output error message.
8. device according to claim 6, it is characterised in that also include：
First sending module, for the directory information to be sent to each meta data server into metadata server cluster
Afterwards, if not receiving the result of any piece of metadata server return after preset time period, taken to correspondence metadata
Business device sends the directory information again.
9. device according to claim 8, it is characterised in that also include：
Second sending module, is used for：Determine the knot for not receiving the return of any piece of metadata server after preset time period
After fruit, the meta data server corresponding informance that will not receive the result of its return is sent to the client.
10. device according to claim 9, it is characterised in that the return module includes：
Display unit, is used for：The result is aggregated into total Query Result and is back to the client to indicate the client pair
Total Query Result is shown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710224344.4A CN106980697A (en) | 2017-04-07 | 2017-04-07 | A kind of catalogue distribution querying method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710224344.4A CN106980697A (en) | 2017-04-07 | 2017-04-07 | A kind of catalogue distribution querying method and device |
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| CN201710224344.4A Pending CN106980697A (en) | 2017-04-07 | 2017-04-07 | A kind of catalogue distribution querying method and device |
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| CN107480310A (en) * | 2017-09-29 | 2017-12-15 | 郑州云海信息技术有限公司 | A kind of metadata cluster catalogue dynamic load balancing method of release and system |
| CN111221781A (en) * | 2018-11-27 | 2020-06-02 | 杭州海康威视***技术有限公司 | Data searching method and device, electronic equipment and system |
| CN112685389A (en) * | 2021-03-19 | 2021-04-20 | 北京瑞莱智慧科技有限公司 | Data management method, data management device, electronic device, and storage medium |
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Application publication date: 20170725 |