CN110109884A - A kind of file reading, device, equipment and medium - Google Patents
A kind of file reading, device, equipment and medium Download PDFInfo
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- CN110109884A CN110109884A CN201910434286.7A CN201910434286A CN110109884A CN 110109884 A CN110109884 A CN 110109884A CN 201910434286 A CN201910434286 A CN 201910434286A CN 110109884 A CN110109884 A CN 110109884A
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- 238000000034 method Methods 0.000 claims abstract description 38
- 238000003860 storage Methods 0.000 claims description 13
- 238000004590 computer program Methods 0.000 claims description 9
- 230000006854 communication Effects 0.000 abstract description 20
- 230000008569 process Effects 0.000 abstract description 14
- 238000004891 communication Methods 0.000 abstract description 10
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 230000002159 abnormal effect 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
- G06F16/14—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
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/17—Details of further file system functions
- G06F16/172—Caching, prefetching or hoarding of files
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- Library & Information Science (AREA)
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Abstract
The invention discloses a kind of file reading, device, equipment and medium, the step of this method includes: to read demand according to file to read corresponding target metadata in MDS, and obtain the target data size for the file destination being recorded in target metadata；When target data size is in preset threshold or is equal to preset threshold, file destination is read in MDS；Wherein, size of data is pre-stored within MDS in preset threshold or equal to the file of preset threshold.File of the size of data in certain threshold range by being pre-stored in MDS by this method in advance, the occupancy to the OSD communication resource can be reduced relatively, the opposite OSD that avoids generates delay and obstruction in data communication process, and then ensures the stability of file reading process.In addition, the present invention also provides a kind of document reading apparatus, equipment and medium, beneficial effect is same as above.
Description
Technical field
The present invention relates to data communication fields, more particularly to a kind of file reading, device, equipment and medium.
Background technique
With the development of the universal and Internet technology of computer, data file just in magnanimity and promptly increases, these
Data file is usually stored in computer memory system so that user retrieves data file, analyzes.
In order to realize to file read global reliability, currently generally use distributed file system to data file into
Row stores, and is memory space needed for providing file system jointly by more memory nodes in specific implementation, therefore in order to more
Add the reading for accurately carrying out data file in distributed file system, currently generallys use metadata (Metadata) to depositing
The relevant information for being stored in the data file of memory node is recorded, metadata, also known as broker data, relaying data, for description
The data (data about data) of data, describe the information of data attribute (property), mainly for supporting such as to indicate
The functions such as storage location, historical data, resource lookup, file record.In order to preferably be safeguarded to metadata, current
In usage scenario, metadata is often stored separately in MDS (Metadata Server, meta data server), and data are literary
Part is stored in OSD (Object Storage Device, object storage device), due to the sum of current data file
It is often huger according to measuring, therefore be usually divided and be stored in multiple OSD in advance, and then the client of distributed file system
When accessing some data file, need first to access metadata of the MDS to get the data file, and then further according to first number
According to corresponding data file segment is obtained in multiple paths of multiple OSD or OSD, final group is combined into complete data file,
It is related to the client of distributed file system and the frequent interaction of OSD in this course, needs to occupy more communication money
Source, on this basis, when distributed file system client access data volume it is smaller and need not move through division can store to
When data file in OSD, it is still desirable in accordance with above-mentioned operating process, eventually by distributed file system client with
OSD is interacted to obtain the data file, this will be further exacerbated by occupancy to the communication resource of OSD, may cause number
The abnormal conditions such as delay and obstruction are generated according to communication process, it is difficult to ensure the stability of file reading process.
It can be seen that a kind of file reading is provided, it is opposite to avoid with opposite reduction to the occupancy of the OSD communication resource
Delay and obstruction are generated in data communication process, and then ensures the stability of file reading process, are those skilled in the art
Problem to be solved.
Summary of the invention
The object of the present invention is to provide a kind of file reading, device, equipment and media, logical to OSD with opposite reduction
Believe the occupancy of resource, it is opposite to avoid generating delay and obstruction in data communication process, and then ensure the steady of file reading process
It is qualitative.
In order to solve the above technical problems, the present invention provides a kind of file reading, comprising:
Demand is read according to file and reads corresponding target metadata in MDS, and is obtained and be recorded in target metadata
File destination target data size；
When target data size is in preset threshold or is equal to preset threshold, file destination is read in MDS；Wherein,
Size of data is pre-stored within MDS in preset threshold or equal to the file of preset threshold.
Preferably, file of the size of data in preset threshold is pre-stored within MDS and includes:
File of the size of data in preset threshold is used as the extended attribute of metadata to be stored in MDS in advance.
Preferably, this method further comprises:
The target data size of file destination is caused to be greater than default threshold after carrying out additional data writing operation to file destination
When value, file destination is read in the extended attribute of target metadata, and file destination is stored to OSD.
Preferably, this method further comprises:
When target data size is greater than preset threshold, file destination is read in OSD according to target metadata.
In addition, the present invention also provides a kind of document reading apparatus, comprising:
Metadata read module reads corresponding target metadata for reading demand according to file in MDS, and obtains
It is recorded in the target data size of the file destination in target metadata；
Small documents read module is used for when target data size in preset threshold or when being equal to preset threshold, in MDS
Read file destination；Wherein, file of the size of data in preset threshold is pre-stored within MDS.
Preferably, which further comprises:
Big file read module is used for when target data size is greater than preset threshold, according to target metadata in OSD
Read file destination.
In addition, the present invention also provides a kind of files to read equipment, comprising:
Memory, for storing computer program；
Processor is realized when for executing computer program such as the step of above-mentioned file reading.
In addition, being stored with meter on computer readable storage medium the present invention also provides a kind of computer readable storage medium
Calculation machine program is realized when computer program is executed by processor such as the step of above-mentioned file reading.
File reading provided by the present invention, the file by size of data in preset threshold or equal to preset threshold
It is pre-stored within MDS, demand is read according to file first when executing File read operation and reads corresponding target element in MDS
Data, and then the target data size for the file destination being recorded in target metadata is obtained, when target data size is default
In threshold value or when being equal to preset threshold, file destination is directly read in MDS.As it can be seen that this method passes through in advance by size of data
File in certain threshold range is pre-stored in MDS, and then when user obtains size of data in the threshold range
When file destination, then without interacting with OSD, therefore the occupancy to the OSD communication resource can be reduced relatively, it is opposite to avoid
OSD generates delay and obstruction in data communication process, and then ensures the stability of file reading process.In addition, of the invention
It is same as above also to provide a kind of document reading apparatus, equipment and medium, beneficial effect.
Detailed description of the invention
In order to illustrate the embodiments of the present invention more clearly, attached drawing needed in the embodiment will be done simply below
It introduces, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ordinary skill people
For member, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of flow chart of file reading provided in an embodiment of the present invention；
Fig. 2 is a kind of structure chart of document reading apparatus provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole embodiments.Based on this
Embodiment in invention, those of ordinary skill in the art are without making creative work, obtained every other
Embodiment belongs to the scope of the present invention.
Core of the invention is to provide a kind of file reading, with opposite reduction to the occupancy of the OSD communication resource, relatively
It avoids generating delay and obstruction in data communication process, and then ensures the stability of file reading process.Of the invention is another
Core is to provide a kind of document reading apparatus, equipment and medium.
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.
Embodiment one
Fig. 1 is a kind of flow chart of file reading provided in an embodiment of the present invention.Referring to FIG. 1, file reading side
The specific steps of method include:
Step S10: demand is read according to file and reads corresponding target metadata in MDS, and obtains and is recorded in target
The target data size of file destination in metadata.
It should be noted that the executing subject of this method can be point in distributed file system in addition to MDS and OSD
The client of cloth file system, the client are interacted by user's control according to user demand is corresponding with MDS and OSD progress
And obtain corresponding file.This step i.e. according to the file of user read demand is read in MDS used to store metadata and
The corresponding target metadata of file needed for user, and then get in target metadata the association attributes letter of file needed for user
Breath, i.e. the target data size of file destination, target data size herein refer to file destination number shared in OSD equipment
According to space.
Step S11: when target data size is in preset threshold or is equal to preset threshold, target text is read in MDS
Part.
Wherein, size of data is pre-stored within MDS in preset threshold or equal to the file of preset threshold.
In this step, illustrate have in preset threshold or when being equal to preset threshold when the target data size got
There is the corresponding document of the target data size to meet preset target file type, and the file destination of the type is stored in advance
In MDS.Since this step is when target data size is in preset threshold or is equal to preset threshold, target is obtained in MDS
File, therefore being stored in advance in the file destination in MDS is the relatively small file of size of data in distributed file system, in advance
First the relatively small file of size of data is stored in MDS, can directly be obtained in MDS when user accesses this document
It arrives, client and the OSD equipment without distributed file system interact.Preset threshold in this step should be according to distribution
Depending on the actual use scene of file system, such as the data capacity and the amount of metadata in MDS equipment etc. of MDS equipment, it answers
Guarantee that MDS normally can provide metadata to client.
File reading provided by the present invention, the file by size of data in preset threshold or equal to preset threshold
It is pre-stored within MDS, demand is read according to file first when executing File read operation and reads corresponding target element in MDS
Data, and then the target data size for the file destination being recorded in target metadata is obtained, when target data size is default
In threshold value or when being equal to preset threshold, file destination is directly read in MDS.As it can be seen that this method passes through in advance by size of data
File in certain threshold range is pre-stored in MDS, and then when user obtains size of data in the threshold range
When file destination, then without interacting with OSD, therefore the occupancy to the OSD communication resource can be reduced relatively, it is opposite to avoid
OSD generates delay and obstruction in data communication process, and then ensures the stability of file reading process.
Embodiment two
On the basis of the above embodiments, the present invention also provides a series of preferred embodiments.
As a preferred embodiment, file of the size of data in preset threshold is pre-stored within MDS includes:
File of the size of data in preset threshold is used as the extended attribute of metadata to be stored in MDS in advance.
It should be noted that due to consideration that being previously provided in the data structure of metadata for increasing data item
Extended attribute, therefore in the present embodiment, it is stored in advance in extended attribute in the metadata using by file, is realized with this
File is stored in the purpose in MDS, since the data structure of metadata has the stability of data storage, opposite can be ensured
Reliability when file stores in MDS.
On the basis of the above embodiment, as a preferred embodiment, this method further comprises:
The target data size of file destination is caused to be greater than default threshold after carrying out additional data writing operation to file destination
When value, file destination is read in the extended attribute of target metadata, and file destination is stored to OSD.
It should be noted that present embodiment allows for the case where writing in the presence of the addition for carrying out data to file destination
When, the size of data of file destination can be continuously increased, and then be more than default threshold there may be the target data size of file destination
The case where value, in the case, in order to ensure the storage to file destination does not cause excessive occupancy, this reality to the space of MDS
Apply mode causes the target data size of file destination to be greater than preset threshold after carrying out additional data writing operation to file destination
When, file destination is read out in the extended attribute of target metadata, and then file destination is stored into OSD, with this
It avoids and is excessively occupied caused by the space MDS because the data volume of file destination is continuously increased, guarantee that metadata can be normal
It is stored in MDS, and then ensures that MDS normally can provide Metadata Service to client.
On the basis of a series of above-mentioned embodiments, as a preferred embodiment, this method further comprises:
When target data size is greater than preset threshold, file destination is read in OSD according to target metadata.
It should be noted that in the present embodiment, target data size to be greater than to the file destination of preset threshold in advance
It directly stores into OSD, and then when target data size is greater than preset threshold, mesh is read in OSD according to target metadata
File is marked, opposite avoid causes the space MDS due to storing the relatively large file destination of target data size into MDS
Excessive occupancy, and then ensure that metadata can normal storage in MDS, it is ensured that MDS can normally to client provide member
Data service.
Embodiment three
Hereinbefore the embodiment of file reading is described in detail, the present invention also provides one kind and is somebody's turn to do
The corresponding document reading apparatus of method, since the embodiment of device part is corresponded to each other with the embodiment of method part, dress
Set part embodiment refer to method part embodiment description, wouldn't repeat here.
Fig. 2 is a kind of structure chart of document reading apparatus provided in an embodiment of the present invention.Text provided in an embodiment of the present invention
Part reading device, comprising:
Metadata read module 10 reads corresponding target metadata for reading demand according to file in MDS, and obtains
Take the target data size for the file destination being recorded in target metadata.
Small documents read module 11 is used for when target data size in preset threshold or when being equal to preset threshold, in MDS
Middle reading file destination；Wherein, file of the size of data in preset threshold is pre-stored within MDS.
Document reading apparatus provided by the present invention, the file by size of data in preset threshold or equal to preset threshold
It is pre-stored within MDS, demand is read according to file first when executing File read operation and reads corresponding target element in MDS
Data, and then the target data size for the file destination being recorded in target metadata is obtained, when target data size is default
In threshold value or when being equal to preset threshold, file destination is directly read in MDS.As it can be seen that the present apparatus passes through in advance by size of data
File in certain threshold range is pre-stored in MDS, and then when user obtains size of data in the threshold range
When file destination, then without interacting with OSD, therefore the occupancy to the OSD communication resource can be reduced relatively, it is opposite to avoid
OSD generates delay and obstruction in data communication process, and then ensures the stability of file reading process.
On the basis of embodiment three, the device further include:
Big file read module is used for when target data size is greater than preset threshold, according to target metadata in OSD
Read file destination.
Example IV
In addition, the present invention also provides a kind of files to read equipment, comprising:
Memory, for storing computer program；
Processor is realized when for executing computer program such as the step of above-mentioned file reading.
File provided by the present invention reads equipment, the file by size of data in preset threshold or equal to preset threshold
It is pre-stored within MDS, demand is read according to file first when executing File read operation and reads corresponding target element in MDS
Data, and then the target data size for the file destination being recorded in target metadata is obtained, when target data size is default
In threshold value or when being equal to preset threshold, file destination is directly read in MDS.As it can be seen that this equipment passes through in advance by size of data
File in certain threshold range is pre-stored in MDS, and then when user obtains size of data in the threshold range
When file destination, then without interacting with OSD, therefore the occupancy to the OSD communication resource can be reduced relatively, it is opposite to avoid
OSD generates delay and obstruction in data communication process, and then ensures the stability of file reading process.
In addition, being stored with meter on computer readable storage medium the present invention also provides a kind of computer readable storage medium
Calculation machine program is realized when computer program is executed by processor such as the step of above-mentioned file reading.
Computer readable storage medium provided by the present invention, by size of data in preset threshold or equal to preset threshold
File be pre-stored within MDS, when executing File read operation first according to file read demand read in MDS accordingly
Target metadata, and then the target data size for the file destination being recorded in target metadata is obtained, when target data size
In preset threshold or when being equal to preset threshold, file destination is directly read in MDS.As it can be seen that this computer-readable storage medium
Matter works as user and obtains data by the way that file of the size of data in certain threshold range is pre-stored in MDS in advance
When file destination of the size in the threshold range, then without being interacted with OSD, therefore it opposite can reduce and OSD is communicated
The occupancy of resource, the opposite OSD that avoids generates delay and obstruction in data communication process, and then ensures file reading process
Stability.
A kind of file reading provided by the present invention, device, equipment and medium are described in detail above.It says
Each embodiment is described in a progressive manner in bright book, and the highlights of each of the examples are the differences with other embodiments
Place, the same or similar parts in each embodiment may refer to each other.For the device disclosed in the embodiment, due to its with
Method disclosed in embodiment is corresponding, so being described relatively simple, reference may be made to the description of the method.It should refer to
It out, for those skilled in the art, without departing from the principle of the present invention, can also be to the present invention
Some improvement and modification can also be carried out, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
Claims (8)
1. a kind of file reading characterized by comprising
Demand is read according to file and reads corresponding target metadata in MDS, and is obtained and be recorded in the target metadata
File destination target data size；
When the target data size is in preset threshold or is equal to the preset threshold, the mesh is read in the MDS
Mark file；Wherein, size of data is pre-stored within described in the preset threshold or equal to the file of the preset threshold
MDS。
2. the method according to claim 1, wherein file of the size of data in the preset threshold is pre-
Being first stored in the MDS includes:
File of the size of data in the preset threshold is used as the extended attribute of metadata to be stored in the MDS in advance.
3. according to the method described in claim 2, it is characterized in that, this method further comprises:
The target data size of the file destination is caused to be greater than institute after carrying out additional data writing operation to the file destination
When stating preset threshold, the file destination is read in the extended attribute of the target metadata, and the file destination is deposited
It stores up to OSD.
4. according to claim 1 to method described in 3, which is characterized in that this method further comprises:
When the target data size is greater than the preset threshold, the mesh is read in OSD according to the target metadata
Mark file.
5. a kind of document reading apparatus characterized by comprising
Metadata read module reads corresponding target metadata for reading demand according to file in MDS, and obtains record
The target data size of file destination in the target metadata；
Small documents read module is used for when the target data size in preset threshold or when being equal to the preset threshold,
The file destination is read in the MDS；Wherein, file of the size of data in the preset threshold is pre-stored within described
MDS。
6. device according to claim 5, which is characterized in that the device further comprises:
Big file read module is used for when the target data size is greater than the preset threshold, according to the target element number
According to reading the file destination in OSD.
7. a kind of file reads equipment characterized by comprising
Memory, for storing computer program；
Processor realizes such as Claims 1-4 described in any item file readings when for executing the computer program
The step of.
8. a kind of computer readable storage medium, which is characterized in that be stored with computer on the computer readable storage medium
Program is realized when the computer program is executed by processor such as the described in any item file readings of Claims 1-4
Step.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910434286.7A CN110109884A (en) | 2019-05-23 | 2019-05-23 | A kind of file reading, device, equipment and medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910434286.7A CN110109884A (en) | 2019-05-23 | 2019-05-23 | A kind of file reading, device, equipment and medium |
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| CN110109884A true CN110109884A (en) | 2019-08-09 |
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| CN201910434286.7A Pending CN110109884A (en) | 2019-05-23 | 2019-05-23 | A kind of file reading, device, equipment and medium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112738270A (en) * | 2021-01-07 | 2021-04-30 | 苏州浪潮智能科技有限公司 | File transmission method, device, equipment and storage medium |
| CN113961968A (en) * | 2021-12-22 | 2022-01-21 | 北京安华金和科技有限公司 | Method and device for carrying out data desensitization interrupt post-processing on file |
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| CN105141685A (en) * | 2015-08-18 | 2015-12-09 | 浪潮(北京)电子信息产业有限公司 | File read-write system and meta data memory thereof as well as method and device for reading and writing files |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112738270A (en) * | 2021-01-07 | 2021-04-30 | 苏州浪潮智能科技有限公司 | File transmission method, device, equipment and storage medium |
| CN112738270B (en) * | 2021-01-07 | 2022-12-30 | 苏州浪潮智能科技有限公司 | File transmission method, device, equipment and storage medium |
| US11792258B1 (en) | 2021-01-07 | 2023-10-17 | Inspur Suzhou Intelligent Technology Co., Ltd. | File transmission method and apparatus, device, and storage medium |
| CN113961968A (en) * | 2021-12-22 | 2022-01-21 | 北京安华金和科技有限公司 | Method and device for carrying out data desensitization interrupt post-processing on file |
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Application publication date: 20190809 |