CN109558079A - A kind of method and device of distributed memory system processing operation request - Google Patents
A kind of method and device of distributed memory system processing operation request Download PDFInfo
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- 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
- G06F3/0629—Configuration or reconfiguration of storage systems
- G06F3/0631—Configuration or reconfiguration of storage systems by allocating resources to storage 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
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0655—Vertical data movement, i.e. input-output transfer; data movement between one or more hosts and one or more storage devices
- G06F3/0659—Command handling arrangements, e.g. command buffers, queues, command scheduling
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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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Abstract
The invention discloses a kind of methods of distributed memory system processing operation request, applied to client, operation requests can be received, then operation requests multiple sub-operations are decomposed into request, and determine the object storage device for being respectively used to handle each sub-operation request, corresponding sub-operation request is sent to each object storage equipment finally by network, so as to the object storage device processing sub-operation request.It can be seen that, the method achieve the decomposition in client executing to operation requests, and the purpose being allocated is requested to the sub-operation that decomposition obtains, it avoids and operation requests is sent to the process that main OSD is allocated by main OSD again, the dependence to main OSD is reduced, the efficiency of processing operation request is improved.In addition, effect corresponds to the above method the present invention also provides device, a kind of client and a kind of distributed memory system of a kind of request of distributed memory system processing operation.
Description
Technical field
The present invention relates to field of storage, in particular to a kind of method, apparatus of distributed memory system processing operation request,
Client and a kind of distributed memory system.
Background technique
Distributed memory system is a large amount of common PC servers by network interconnection, externally provides storage as a whole
The system of service.
Distributed memory system includes for initiating the operation requests client to data, further includes for storing data
Object storage device, object storage device are equipment (the Object-based Storage based on object storage technology
Device), abbreviation OSD.
Currently, the process of distributed memory system processing operation request is as shown in Figure 1, object storage device is divided into main OSD
With from OSD, when client issues operation requests, need first to send operation requests to main OSD, then main OSD is true by calculating
Surely the multiple from OSD of operation requests are executed, then multiple from OSD transmission sub-operation request to this, is only returned result to when from OSD
After main OSD, main OSD just can be to the message of clients report processing completion.
As it can be seen that the method that traditional distributed operating system processing operation is requested needs main OSD to be allocated calculating, to master
The dependence of OSD computing capability is larger, and operation requests treatment effeciency is lower.
Summary of the invention
The object of the present invention is to provide a kind of distributed memory system processing operation request method, apparatus, client and
A kind of distributed memory system, the method to solve traditional distributed operating system processing operation request need main OSD into
Row distribution calculates, operation requests treatment effeciency lower problem larger to the dependence of main OSD computing capability.
In order to solve the above technical problems, the present invention provides a kind of method of distributed memory system processing operation request,
Applied to client, comprising:
Receive operation requests；
The operation requests are decomposed into the request of multiple sub-operations, and determines to be respectively used to handle each sub-operation and ask
The object storage device asked；
Corresponding sub-operation request is sent to each object storage device by network, so that the object storage is set
It is standby to handle the sub-operation request.
Optionally, described the operation requests are decomposed into multiple sub-operations to request, and determine be respectively used to handle it is each
The object storage device of the sub-operation request, comprising:
When the operation requests are write request, target data to be written is determined；
Correcting and eleting codes calculating is carried out to the target data, obtains including original data block and the multiple data for verifying data block
Block；
The sub- write request of each data block is generated, and determines the object for being respectively used to handle each sub- write request
Store equipment.
Optionally, described the operation requests are decomposed into multiple sub-operations to request, and determine be respectively used to handle it is each
The object storage device of the sub-operation request, comprising:
When the operation requests are read request, target data to be read is determined；
According to default screening conditions, the data block of preset quantity is filtered out from the data block of the target data；
The sub- read request of each data block in the data block of the preset quantity is generated, and determination is respectively used to handle
The object storage device of each sub- read request.
Optionally, described the operation requests are decomposed into multiple sub-operations to request, and determine be respectively used to handle it is each
The object storage device of the sub-operation request, comprising:
Default osdc module is called, the operation requests are decomposed into multiple sub-operations and are requested, and determination is respectively used to locate
Manage the object storage device of each sub-operation request.
Optionally, corresponding sub-operation request is sent to each object storage device by network described, so as to
The object storage device is handled after the sub-operation request, further includes:
Receive the processing result that each object storage device requests the sub-operation.
Correspondingly, being applied to client the present invention also provides a kind of device of distributed memory system processing operation request
End, comprising:
Receiving module: for receiving operation requests；
Decomposing module: requesting for the operation requests to be decomposed into multiple sub-operations, and determines and be respectively used to processing respectively
The object storage device of a sub-operation request；
Sending module: for sending corresponding sub-operation request to each object storage device by network, so as to
The object storage device handles the sub-operation request.
Optionally, the decomposing module includes:
Target data determination unit: for determining target data to be written when the operation requests are write request；
Correcting and eleting codes computing unit: for carrying out correcting and eleting codes calculating to the target data, obtain include original data block with
Verify multiple data blocks of data block；
Sub- write request generation unit: for generating the sub- write request of each data block, and determination is respectively used to handle
The object storage device of each sub- write request.
Optionally, the decomposing module is specifically used for:
Default osdc module is called, the operation requests are decomposed into multiple sub-operations and are requested, and determination is respectively used to locate
Manage the object storage device of each sub-operation request.
In addition, the present invention also provides a kind of clients, comprising:
Memory: for storing computer program；
Processor: for executing the computer program, to realize a kind of distributed memory system processing as described above
The step of method of operation requests.
Finally, the distributed memory system includes multiple objects the present invention also provides a kind of distributed memory system
Equipment is stored, further includes a kind of client as described above.
A kind of method of distributed memory system processing operation request provided by the present invention, is applied to client, can
Operation requests are received, operation requests are then decomposed into multiple sub-operations and are requested, and determination is respectively used to handle each sub-operation
The object storage device of request sends corresponding sub-operation to each object storage equipment finally by network and requests, so as to right
The request of the sub-operation as described in storage device processes.As it can be seen that the method achieve the decomposition in client executing to operation requests, and
The purpose being allocated is requested to the obtained sub-operation of decomposition, is avoided and operation requests are sent to main OSD are carried out again by main OSD
The process of distribution reduces the dependence to main OSD, improves the efficiency of processing operation request.
In addition, the present invention also provides a kind of distributed memory system processing operation request device, a kind of client and
A kind of distributed memory system, effect correspond to the above method, and which is not described herein again.
Detailed description of the invention
It, below will be to embodiment or existing for the clearer technical solution for illustrating the embodiment of the present invention or the prior art
Attached drawing needed in technical description is briefly described, it should be apparent that, the accompanying drawings in the following description is only this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the process schematic of current distributed memory system processing operation request；
Fig. 2 is a kind of realization of the embodiment of the method one of distributed memory system processing operation request provided by the present invention
Flow chart；
Fig. 3 is a kind of process of the embodiment of the method one of distributed memory system processing operation request provided by the present invention
Schematic diagram；
Fig. 4 is a kind of realization of the embodiment of the method two of distributed memory system processing operation request provided by the present invention
Flow chart；
Fig. 5 be a kind of distributed memory system processing operation request provided by the present invention embodiment of the method two in be distributed
The configuration diagram of formula system；
Fig. 6 is a kind of functional block of the Installation practice of distributed memory system processing operation request provided by the present invention
Figure；
Fig. 7 is a kind of structural schematic diagram of client embodiment provided by the invention；
Fig. 8 be the present invention for a kind of distributed memory system embodiment structural schematic diagram.
Specific embodiment
Core of the invention is to provide a kind of method, apparatus of distributed memory system processing operation request, a kind of client
End and a kind of distributed memory system realize the decomposition in client executing to operation requests, and grasp to the son that decomposition obtains
Make the purpose that request is allocated, avoid and operation requests are sent to the process that main OSD is allocated by main OSD again, reduces
Dependence to main OSD improves the efficiency of processing operation request.
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.Obviously, described embodiments are only a part of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
It is situated between below to a kind of embodiment of the method one of distributed memory system processing operation request provided by the invention
It continues, embodiment one is applied to client, and referring to fig. 2, embodiment one includes:
Step S101: operation requests are received.
It should be noted that as shown in figure 3, client mainly realizes interface, externally in distributed memory system
The function of access is provided, upper layer application can access the data stored in distributed memory system by interface, that is, be stored in
Data in OSD.Specifically, aforesaid operations request can be write operation requests or read operation request, aforesaid operations request can be with
Issued by user, be also possible to the automatic trigger upper layer application under certain preset condition make its issue, the present embodiment to this not
It limits.
Step S102: the operation requests are decomposed into multiple sub-operations and are requested, and determination is respectively used to handle each institute
State the object storage device of sub-operation request.
It is noted that when data are written, needing to be divided into data in distributed memory system
Then each data block is stored in different object storage devices by multiple data blocks.Therefore, when aforesaid operations request is to write
When request, the data for needing to be written into are divided, and determine that each data block for dividing and obtaining needs which is written
Object storage device, it is clear that when aforesaid operations request is write request, above-mentioned sub-operation request, which just contains some data block, to be needed
The information of which object storage device is written.And when aforesaid operations request is read request, it is thus necessary to determine that data to be read
Each data block which object storage device be stored in, it is clear that above-mentioned sub-operation request at this time is contained from some object
Storage equipment reads the information of which data block.
Step S103: corresponding sub-operation is sent to each object storage device by network and is requested, so as to described
The object storage device processing sub-operation request.
Due to the architectural features of distributed memory system, client generally requires through network and accesses object storage device
On data, therefore above-mentioned sub-operation request be by network transmission.As shown in figure 3, client is by network directly to right
As storage equipment carries out data transmission.
As it can be seen that the present embodiment provides a kind of method of distributed memory system processing operation request, it is applied to client,
Operation requests can be received, operation requests are then decomposed into multiple sub-operations and are requested, and determination is respectively used to handle each height
The object storage device of operation requests sends corresponding sub-operation to each object storage equipment finally by network and requests, with
Just object storage device handles the sub-operation request.As it can be seen that the method achieve divide in client executing operation requests
Solution, and the purpose being allocated is requested to the sub-operation that decomposition obtains, it avoids and operation requests is sent to main OSD again by leading
The process that OSD is allocated reduces the dependence to main OSD, improves the efficiency of processing operation request.
The method for starting that a kind of distributed memory system processing operation request provided by the invention is discussed in detail below is implemented
Example two, embodiment two is realized based on embodiment one, and has carried out expansion to a certain extent on the basis of example 1.
As shown in figure 4, embodiment two includes:
Step S201: operation requests are received.
Step S202: calling default osdc module, and the operation requests are decomposed into multiple sub-operations and are requested, and determines and divides
The object storage device of each sub-operation request Yong Yu not handled.
As described above, client provides the external interface of distributed memory system, upper layer application can pass through the interface
To access the data in distributed memory system.As an alternative embodiment, above-mentioned distributed memory system can be
Icfs, the system can be realized block storage, file storage and object storage, and the primary structure of the system is as shown in figure 5, client
Storage system can be accessed by Librados interface, the position of bottom compared with Librados is located in client with Osdc,
Librados provides the basic interfaces such as creation, deletion, the creation of object, the deletion of Pool, and Osdc is then used for encapsulation operation, meter
The address of object is calculated, transmission asks summation process overtime.
The present embodiment is based on the improvement to above-mentioned Osdc module, to realize that operation requests, which are decomposed into multiple sub-operations, asks
It asks, and the process being allocated is requested to the sub-operation that decomposition obtains.Specifically, first in the Objecter.cc/ of Osdc module
Do_split_op () function is added in h file, realizes and operation is split into several sub-operations by correcting and eleting codes, then exist
New do_osd_split_op () letter is write according to original do_osd_op () function in ReplicatedPG.cc file
Number is adapted to sub-operation after splitting in the function.
Step S203: corresponding sub-operation is sent to each object storage device by network and is requested, so as to described
The object storage device processing sub-operation request.
Step S204: the processing result that each object storage device requests the sub-operation is received.
As described above, operation requests include write request and read request, it is read request or write request, step according to operation requests
The implementation procedure of rapid S202 is slightly different.Therefore, a step can be increased between step S201 and step S202: judgement behaviour
Make request be read request or write request, then respectively enter corresponding process flow according to two kinds of situations, below to this two
Kind processing distance is described:
When operation requests are write request, specific process flow are as follows:
Step S301: according to write request, target data to be written is determined.
Step S302: carrying out correcting and eleting codes calculating to the target data, obtains including original data block and verification data block
Multiple data blocks.
Above-mentioned correcting and eleting codes calculate, and refer to a data being cut into n equal part, by dividing data encoding to this n etc., obtain
The verification data block of the equal sizes such as m, this n+m parts of data are stored on different nodes, take any n in n+m data block
A data block can obtain original data by restructing algorithm, fault-tolerant to achieve the purpose that.Under normal circumstances, n takes 10, m to take
3。
Step S303: generating the sub- write request of each data block, and determines to be respectively used to handle each son and write
The object storage device of request.
When operation requests are read request, specific process flow are as follows:
Step S401: according to read request, target data to be read is determined.
Step S402: according to default screening conditions, the number of preset quantity is filtered out from the data block of the target data
According to block.
As described above, taking any n data block in n+m data block, complete initial data can be accessed, because
This, as a preferred embodiment, the preset quantity between n a to n+m can be set, to reduce pair for needing to access
Quantity as storing equipment.
Step S403: the sub- read request of each data block in the data block of the preset quantity is generated, and determines and divides
The object storage device of each sub- read request Yong Yu not handled.
To sum up, the method for a kind of distributed memory system processing operation request provided in this embodiment, by Osdc mould
Block improves, and realizes the purpose decomposed and distributed to operation requests in client, avoids and issues main OSD again by leading
The process that OSD is allocated, improves treatment effeciency.
Below to a kind of Installation practice of distributed memory system processing operation request provided in an embodiment of the present invention into
Row is introduced, and a kind of device of distributed memory system processing operation request described below is deposited with a kind of above-described distribution
The method of storage system processing operation request can correspond to each other reference.
Referring to Fig. 6, which includes:
Receiving module 601: for receiving operation requests；
Decomposing module 602: it is requested for the operation requests to be decomposed into multiple sub-operations, and determination is respectively used to handle
The object storage device of each sub-operation request；
Sending module 603: for sending corresponding sub-operation request to each object storage device by network, with
Toilet states object storage device and handles the sub-operation request.
As an alternative embodiment, the decomposing module 602 includes:
Target data determination unit 6021: for determining number of targets to be written when the operation requests are write request
According to；
Correcting and eleting codes computing unit 6022: it for carrying out correcting and eleting codes calculating to the target data, obtains including initial data
Multiple data blocks of block sum check data block；
Sub- write request generation unit 6023: for generating the sub- write request of each data block, and determination is respectively used to
Handle the object storage device of each sub- write request.
As an alternative embodiment, the decomposing module 602 is specifically used for:
Default osdc module is called, the operation requests are decomposed into multiple sub-operations and are requested, and determination is respectively used to locate
Manage the object storage device of each sub-operation request.
A kind of device of distributed memory system processing operation request of the present embodiment is for realizing a kind of distribution above-mentioned
The method of formula storage system processing operation request, therefore the visible distribution one of above of specific embodiment in the device
The embodiment part of the method for storage system processing operation request, for example, receiving module 601, decomposing module 602, sending module
603, it is respectively used to step S101, S102, S103 in the method for realizing a kind of above-mentioned distributed memory system processing operation request.
So specific embodiment is referred to the description of corresponding various pieces embodiment, not reinflated introduction herein.
In addition, due to the present embodiment a kind of distributed memory system processing operation request device for realizing above-mentioned
A kind of method of distributed memory system processing operation request, therefore its effect is corresponding with the effect of the above method, here not
It repeats again.
In addition, the present invention also provides a kind of client embodiments, as shown in fig. 7, the client includes:
Memory 701: for storing computer program；
Processor 702: for executing the computer program, to realize at a kind of distributed memory system as described above
The step of managing the method for operation requests.
Finally, the present invention provides a kind of distributed memory system, as shown in figure 8, the distributed memory system includes
Multiple object storage devices 801 further include a kind of client 802 as described above.
A kind of client of the present embodiment and a kind of distributed memory system are for realizing a kind of distributed storage above-mentioned
The method of system processing operation request, therefore the client, the specific embodiment of distributed memory system are visible hereinbefore
A kind of embodiment part of the method for distributed memory system processing operation request, and the client, distributed memory system
Effect corresponds to the above method, here not reinflated introduction.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with it is other
The difference of embodiment, same or similar part may refer to each other between each embodiment.For being filled disclosed in embodiment
For setting, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is referring to method part
Explanation.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond the scope of this invention.
The step of method described in conjunction with the examples disclosed in this document or algorithm, can directly be held with hardware, processor
The combination of capable software module or the two is implemented.Software module can be placed in random access memory (RAM), 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.
Above to a kind of method, apparatus, the client of the request of distributed memory system processing operation provided by the present invention
And distributed memory system is described in detail.Specific case used herein to the principle of the present invention and embodiment into
Elaboration is gone, the above description of the embodiment is only used to help understand the method for the present invention and its core ideas.It should be pointed out that pair
For those skilled in the art, without departing from the principle of the present invention, the present invention can also be carried out
Some improvements and modifications, these improvements and modifications also fall within the scope of protection of the claims of the present invention.
Claims (10)
1. a kind of method of distributed memory system processing operation request, is applied to client characterized by comprising
Receive operation requests；
The operation requests are decomposed into multiple sub-operation requests, and determines and is respectively used to handle each sub-operation request
Object storage device；
Corresponding sub-operation request is sent to each object storage device by network, at the object storage device
Manage the sub-operation request.
2. the method as described in claim 1, which is characterized in that described the operation requests are decomposed into multiple sub-operations to ask
It asks, and determines the object storage device for being respectively used to handle each sub-operation request, comprising:
When the operation requests are write request, target data to be written is determined；
Correcting and eleting codes calculating is carried out to the target data, obtains including original data block and the multiple data blocks for verifying data block；
The sub- write request of each data block is generated, and determines the object storage for being respectively used to handle each sub- write request
Equipment.
3. the method as described in claim 1, which is characterized in that described the operation requests are decomposed into multiple sub-operations to ask
It asks, and determines the object storage device for being respectively used to handle each sub-operation request, comprising:
When the operation requests are read request, target data to be read is determined；
According to default screening conditions, the data block of preset quantity is filtered out from the data block of the target data；
Generate the sub- read request of each data block in the data block of the preset quantity, and determine be respectively used to handle it is each
The object storage device of the sub- read request.
4. method as claimed in any one of claims 1-3, which is characterized in that it is described the operation requests are decomposed into it is multiple
Sub-operation request, and determine the object storage device for being respectively used to handle each sub-operation request, comprising:
The operation requests are decomposed into multiple sub-operations and requested by the default osdc module of calling, and are determined and be respectively used to processing respectively
The object storage device of a sub-operation request.
5. method as claimed in claim 4, which is characterized in that sent out by network to each object storage device described
Corresponding sub-operation is sent to request, after the object storage device processing sub-operation request, further includes:
Receive the processing result that each object storage device requests the sub-operation.
6. a kind of device of distributed memory system processing operation request, is applied to client characterized by comprising
Receiving module: for receiving operation requests；
Decomposing module: it is requested for the operation requests to be decomposed into multiple sub-operations, and determination is respectively used to handle each institute
State the object storage device of sub-operation request；
Sending module: for sending corresponding sub-operation request to each object storage device by network, so as to described
The object storage device processing sub-operation request.
7. device as claimed in claim 6, which is characterized in that the decomposing module includes:
Target data determination unit: for determining target data to be written when the operation requests are write request；
Correcting and eleting codes computing unit: it for carrying out correcting and eleting codes calculating to the target data, obtains including initial data block sum check
Multiple data blocks of data block；
Sub- write request generation unit: for generating the sub- write request of each data block, and determine be respectively used to handle it is each
The object storage device of the sub- write request.
8. device as claimed in claim 7, which is characterized in that the decomposing module is specifically used for:
The operation requests are decomposed into multiple sub-operations and requested by the default osdc module of calling, and are determined and be respectively used to processing respectively
The object storage device of a sub-operation request.
9. a kind of client characterized by comprising
Memory: for storing computer program；
Processor: for executing the computer program, to realize a kind of distribution as described in claim 1-5 any one
The step of method of storage system processing operation request.
10. a kind of distributed memory system, which is characterized in that the distributed memory system includes multiple object storage devices,
It further include a kind of client as claimed in claim 9.
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| CN112486413A (en) * | 2020-11-27 | 2021-03-12 | 杭州朗和科技有限公司 | Data reading method, device, medium and computing equipment |
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| CN103561057A (en) * | 2013-10-15 | 2014-02-05 | 深圳清华大学研究院 | Data storage method based on distributed hash table and erasure codes |
| CN106657356A (en) * | 2016-12-29 | 2017-05-10 | 郑州云海信息技术有限公司 | Data writing method and device for cloud storage system, and cloud storage system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112486413A (en) * | 2020-11-27 | 2021-03-12 | 杭州朗和科技有限公司 | Data reading method, device, medium and computing equipment |
| CN112486413B (en) * | 2020-11-27 | 2022-08-05 | 杭州朗和科技有限公司 | Data reading method, device, medium and computing equipment |
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