CN109669814A - A kind of restoration methods of Metadata Service, device, equipment and readable storage medium storing program for executing - Google Patents
A kind of restoration methods of Metadata Service, device, equipment and readable storage medium storing program for executing Download PDFInfo
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- CN109669814A CN109669814A CN201811506253.0A CN201811506253A CN109669814A CN 109669814 A CN109669814 A CN 109669814A CN 201811506253 A CN201811506253 A CN 201811506253A CN 109669814 A CN109669814 A CN 109669814A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1415—Saving, restoring, recovering or retrying at system level
- G06F11/1435—Saving, restoring, recovering or retrying at system level using file system or storage system metadata
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
- G06F11/1448—Management of the data involved in backup or backup restore
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
- G06F11/1458—Management of the backup or restore process
- G06F11/1469—Backup restoration techniques
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- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
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- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
The invention discloses a kind of restoration methods of Metadata Service, comprising: when restoring Metadata Service, pre-stored data to be restored are searched in the metadata pond at current service end；Wherein, data to be restored are the metadata history access information of server-side, and metadata history access information includes at least: the meta data file of history access and the routing information of meta data file；Data to be restored are read, and the metadata history access information in data to be restored is restored into the caching of server-side, with the Metadata Service of continued access server-side.Wherein, the history access information deposit caching that Metadata Service before service disruption is related to by this method, Metadata Service before capable of making the Metadata Service currently restored and service disruption carries out continued access, eliminates or reduces the service disruption sense and delay sense of client, improve user experience.Recovery device, equipment and the readable storage medium storing program for executing of a kind of Metadata Service disclosed by the invention, similarly have above-mentioned technique effect.
Description
Technical field
The present invention relates to Metadata Service technical field, more specifically to a kind of Metadata Service restoration methods,
Device, equipment and readable storage medium storing program for executing.
Background technique
For mass data, there are many application scenarios for distributed type assemblies storage, such as: high-performance, video monitoring, broadcasting and TV matchmaker
Money etc..
And in Metadata Service cluster, can be caused unavoidably due to power down or other emergency events Metadata Service it is unexpected in
It is disconnected.When technical staff's debugging factor, after restarting Metadata Service, Metadata Service continued access can not be enable, that is to say, that
Although Metadata Service can normal use, can not with the Metadata Service before service disruption carry out continued access, thus meeting
So that the user of client is perceived the interruption and delay of Metadata Service, reduces user experience.
Therefore, when restoring Metadata Service, how to realize the continued access of Metadata Service, be those skilled in the art's needs
It solves the problems, such as.
Summary of the invention
The purpose of the present invention is to provide a kind of restoration methods of Metadata Service, device, equipment and readable storage medium storing program for executing,
To realize that the continued access of Metadata Service restores.
To achieve the above object, the embodiment of the invention provides following technical solutions:
A kind of restoration methods of Metadata Service, comprising:
When restoring Metadata Service, pre-stored data to be restored are searched in the metadata pond at current service end；
Wherein, the data to be restored are the metadata history access information of the server-side, and the metadata history is visited
Ask that information includes at least: the meta data file of history access and the routing information of the meta data file；
The data to be restored are read, and the metadata history access information in the data to be restored is restored to described
In the caching of server-side, with the Metadata Service of server-side described in continued access.
Wherein, the metadata history access information by the data to be restored is restored to the caching of the server-side
In after, further includes:
Receive the metadata access request that client is sent；
Judge in the caching with the presence or absence of target metadata file corresponding with the request；
If so, reading the target metadata file from the caching, and the target metadata file is returned
To the client.
Wherein, further includes:
When the target metadata file is not present in the caching, institute is read from the metadata pond of the server-side
State target metadata file；
The target metadata file is back to the client, and by the target metadata file and the target
The routing information of meta data file is recorded to preset list to be restored, to record the data to be restored.
Wherein, further includes:
Detect whether the memory space that the list to be restored occupies is greater than preset threshold value according to the preset time cycle；
If so, reducing the data to be restored in the list to be restored according to principle is not used at most recently.
Wherein, further includes:
The list to be restored is stored in metadata log, and is stored with the metadata log to the metadata
Pond.
A kind of recovery device of Metadata Service, comprising:
Searching module, for searching and being stored in advance in the metadata pond at current service end when restoring Metadata Service
Data to be restored；Wherein, the data to be restored are the metadata history access information of the server-side, and the metadata is gone through
History access information includes at least: the meta data file of history access and the routing information of the meta data file；
Recovery module is accessed for reading the data to be restored, and by the metadata history in the data to be restored
Information recovering is into the caching of the server-side, with the Metadata Service of server-side described in continued access.
Wherein, further includes:
Receiving module, for receiving the metadata access request of client transmission；
Judgment module, for judging in the caching with the presence or absence of target metadata file corresponding with the request；
Return module, for when, there are when the target metadata file, institute being read from the caching in the caching
Target metadata file is stated, and the target metadata file is back to the client.
Wherein, further includes:
Read module is used for when the target metadata file is not present in the caching, from the member of the server-side
The target metadata file is read in data pool；
Logging modle, for the target metadata file to be back to the client, and by the target metadata
The routing information of file and the target metadata file is recorded to preset list to be restored, to record the number to be restored
According to.
A kind of restorer of Metadata Service, comprising:
Memory, for storing computer program；
Processor realizes the recovery of Metadata Service described in above-mentioned any one when for executing the computer program
The step of method.
A kind of readable storage medium storing program for executing is stored with computer program, the computer program quilt on the readable storage medium storing program for executing
The step of processor realizes the restoration methods of Metadata Service described in above-mentioned any one when executing.
By above scheme it is found that a kind of restoration methods of Metadata Service provided in an embodiment of the present invention, comprising: when extensive
When recovering data service, pre-stored data to be restored are searched in the metadata pond at current service end；Wherein, described to extensive
Complex data is the metadata history access information of the server-side, and the metadata history access information includes at least: history is visited
The routing information of the meta data file and the meta data file asked；The data to be restored are read, and will be described to be restored
Metadata history access information in data is restored into the caching of the server-side, is taken with the metadata of server-side described in continued access
Business.
As it can be seen that the method when restoring Metadata Service, searched from the metadata pond of server-side it is pre-stored to
Restore data；Data to be restored are the routing information of the meta data file that history accesses and the meta data file, also
It is the metadata information accessed before Metadata Service interrupts；And then these files and information are read into caching, with continued access member number
According to service, that is to say, that when restoring Metadata Service, meta data file that the Metadata Service before service disruption is related to and
Information deposit caching, thus make the Metadata Service currently restored in the shortest time with the Metadata Service before service disruption into
Row continued access, is eliminated or the service disruption sense of reduction client is felt with delay, improves user experience.
Correspondingly, recovery device, equipment and the readable storage medium storing program for executing of a kind of Metadata Service provided in an embodiment of the present invention,
Similarly have above-mentioned technique effect.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of restoration methods flow chart of Metadata Service disclosed by the embodiments of the present invention；
Fig. 2 is a kind of metadata access request processing method flow chart disclosed by the embodiments of the present invention；
Fig. 3 is a kind of recovery device schematic diagram of Metadata Service disclosed by the embodiments of the present invention；
Fig. 4 is a kind of restorer schematic diagram of Metadata Service disclosed by the embodiments 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, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a kind of restoration methods of Metadata Service, device, equipment and readable storage medium storing program for executing, with
Realize that the continued access of Metadata Service restores.
Referring to Fig. 1, a kind of restoration methods of Metadata Service provided in an embodiment of the present invention, comprising:
S101, when restoring Metadata Service, searched in the metadata pond at current service end pre-stored to be restored
Data；
Wherein, data to be restored are the metadata history access information of server-side, and metadata history access information is at least wrapped
It includes: the meta data file of history access and the routing information of meta data file.
S102, data to be restored are read；
S103, the metadata history access information in data to be restored is restored into the caching of server-side, is taken with continued access
The Metadata Service at business end.
Specifically, the access information before metadata history access information i.e. Metadata Service interruption.Such as: client
Meta data file A is asked in proper frequentation, if Metadata Service interrupts suddenly at this time, then when restoring Metadata Service, from first number
It just include the routing information of A file and A file in data to be restored, and A file and A is literary according to data to be restored are read in pond
The routing information of part is stored in caching, the access with continued access client to A file.
As it can be seen that present embodiments providing a kind of restoration methods of Metadata Service, the method is restoring Metadata Service
When, pre-stored data to be restored are searched from the metadata pond of server-side；Data to be restored are first number of history access
The metadata information accessed before being interrupted according to file and the routing information of the meta data file, that is, Metadata Service；Into
And these files and information are read into caching, with continued access Metadata Service, that is to say, that, will when restoring Metadata Service
The meta data file and information that Metadata Service before service disruption is related to are stored in caching, so that the metadata currently restored be made to take
Business in the shortest time with before service disruption Metadata Service carry out continued access, eliminate or reduction client service disruption sense and
Delay sense, improves user experience.
Fig. 2 is referred to, Fig. 2 is a kind of metadata access request processing method disclosed by the embodiments of the present invention.It will be to be restored
After metadata history access information in data is restored into the caching of server-side, further includes:
S201, the metadata access request that client is sent is received；
It whether there is target metadata file corresponding with request in S202, judgement caching；If so, executing S203；If
It is no, then execute S204；
S203, target metadata file is read from caching, and target metadata file is back to client；
S204, target metadata file is read from the metadata pond of server-side, and execute S205；
S205, target metadata file is back to client, and by target metadata file and target metadata file
Routing information record to preset list to be restored, to record data to be restored.
Preferably, further includes: detect whether the memory space that list to be restored occupies is greater than according to the preset time cycle
Preset threshold value；If so, reducing the data to be restored in list to be restored according to principle is not used at most recently.Wherein, also
It include: that list to be restored is stored in metadata log, and stores with metadata log to metadata pond.
In order to avoid the overabundance of data in list to be restored, the detection cycle of list to be restored can be set, with detection to
Whether excessive restore the memory space that list occupies；When excessive, reduce list to be restored according to principle is not used at most recently
In data to be restored.Such as: if the memory space that current list to be restored occupies is excessive, by storage time at most to extensive
Complex data retains the data to be restored of nearest time memory storage from wherein deleting.Wherein it is possible to be arranged for list to be restored
Storage intermediate value appropriate, such as: storage intermediate value is set as 10, when the memory space that list to be restored occupies is excessive, is accounted for
Memory space is reduced to the storage intermediate value, stores intermediate value certainly certainly less than preset threshold value.
A kind of recovery device of Metadata Service provided in an embodiment of the present invention is introduced below, described below one
The recovery device of kind of Metadata Service can be cross-referenced with a kind of above-described restoration methods of Metadata Service.
Referring to Fig. 3, a kind of recovery device of Metadata Service provided in an embodiment of the present invention, comprising:
Searching module 301, for searching in the metadata pond at current service end and depositing in advance when restoring Metadata Service
The data to be restored of storage；Wherein, the data to be restored are the metadata history access information of the server-side, the metadata
History access information includes at least: the meta data file of history access and the routing information of the meta data file；
Recovery module 302 is visited for reading the data to be restored, and by the metadata history in the data to be restored
Information recovering is asked into the caching of the server-side, with the Metadata Service of server-side described in continued access.
Wherein, further includes:
Receiving module, for receiving the metadata access request of client transmission；
Judgment module, for judging in the caching with the presence or absence of target metadata file corresponding with the request；
Return module, for when, there are when the target metadata file, institute being read from the caching in the caching
Target metadata file is stated, and the target metadata file is back to the client.
Wherein, further includes:
Read module is used for when the target metadata file is not present in the caching, from the member of the server-side
The target metadata file is read in data pool；
Logging modle, for the target metadata file to be back to the client, and by the target metadata
The routing information of file and the target metadata file is recorded to preset list to be restored, to record the number to be restored
According to.
Wherein, further includes:
Whether detection module is big for detecting the memory space that the list to be restored occupies according to the preset time cycle
In preset threshold value；
Reduce module, when the memory space for occupying when the list to be restored is greater than preset threshold value, according to nearest
Principle is not used at most and reduces the data to be restored in the list to be restored.
Wherein, further includes:
Memory module for the list to be restored to be stored in metadata log, and is deposited with the metadata log
It stores up to the metadata pond.
As it can be seen that present embodiments providing a kind of recovery device of Metadata Service, comprising: searching module and recovery mould
Block.When restoring Metadata Service, searched in the metadata pond at current service end by searching module first it is pre-stored to
Restore data；Wherein, the data to be restored are the metadata history access information of the server-side, and the metadata history is visited
Ask that information includes at least: the meta data file of history access and the routing information of the meta data file；Then recovery module
The data to be restored are read, and the metadata history access information in the data to be restored is restored to the server-side
In caching, with the Metadata Service of server-side described in continued access.Share out the work and help one another between such modules, Each performs its own functions, to make
The Metadata Service currently restored has carried out continued access with the Metadata Service before service disruption in the shortest time, eliminates or reduces
The service disruption sense and delay sense of client, improve user experience.
A kind of restorer of Metadata Service provided in an embodiment of the present invention is introduced below, described below one
The restoration methods and device of the restorer of kind of Metadata Service and a kind of above-described Metadata Service can be cross-referenced.
Referring to fig. 4, the restorer of a kind of Metadata Service provided in an embodiment of the present invention, comprising:
Memory 401, for storing computer program；
Processor 402 realizes Metadata Service described in above-mentioned any embodiment when for executing the computer program
Restoration methods the step of.
A kind of readable storage medium storing program for executing provided in an embodiment of the present invention is introduced below, one kind described below is readable to deposit
Storage media can be cross-referenced with a kind of above-described restoration methods of Metadata Service, device and equipment.
A kind of readable storage medium storing program for executing is stored with computer program, the computer program quilt on the readable storage medium storing program for executing
The step of restoration methods of the Metadata Service as described in above-mentioned any embodiment are realized when processor executes.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of restoration methods of Metadata Service characterized by comprising
When restoring Metadata Service, pre-stored data to be restored are searched in the metadata pond at current service end；
Wherein, the data to be restored are the metadata history access information of the server-side, the metadata history access letter
Breath includes at least: the meta data file of history access and the routing information of the meta data file；
The data to be restored are read, and the metadata history access information in the data to be restored is restored to the service
In the caching at end, with the Metadata Service of server-side described in continued access.
2. the restoration methods of Metadata Service according to claim 1, which is characterized in that described by the data to be restored
In metadata history access information restore into the caching of the server-side after, further includes:
Receive the metadata access request that client is sent；
Judge in the caching with the presence or absence of target metadata file corresponding with the request；
If so, reading the target metadata file from the caching, and the target metadata file is back to institute
State client.
3. the restoration methods of Metadata Service according to claim 2, which is characterized in that further include:
When the target metadata file is not present in the caching, the mesh is read from the metadata pond of the server-side
Mark meta data file；
The target metadata file is back to the client, and by the target metadata file and the target element number
It records according to the routing information of file to preset list to be restored, to record the data to be restored.
4. the restoration methods of Metadata Service according to claim 3, which is characterized in that further include:
Detect whether the memory space that the list to be restored occupies is greater than preset threshold value according to the preset time cycle；
If so, reducing the data to be restored in the list to be restored according to principle is not used at most recently.
5. the restoration methods of Metadata Service according to claim 3 or 4, which is characterized in that further include:
The list to be restored is stored in metadata log, and is stored with the metadata log to the metadata pond.
6. a kind of recovery device of Metadata Service characterized by comprising
Searching module, for when restoring Metadata Service, searched in the metadata pond at current service end it is pre-stored to
Restore data；Wherein, the data to be restored are the metadata history access information of the server-side, and the metadata history is visited
Ask that information includes at least: the meta data file of history access and the routing information of the meta data file；
Recovery module, for reading the data to be restored, and by the metadata history access information in the data to be restored
Restore into the caching of the server-side, with the Metadata Service of server-side described in continued access.
7. the recovery device of Metadata Service according to claim 6, which is characterized in that further include:
Receiving module, for receiving the metadata access request of client transmission；
Judgment module, for judging in the caching with the presence or absence of target metadata file corresponding with the request；
Return module, for when, there are when the target metadata file, the mesh being read from the caching in the caching
Meta data file is marked, and the target metadata file is back to the client.
8. the recovery device of Metadata Service according to claim 7, which is characterized in that further include:
Read module is used for when the target metadata file is not present in the caching, from the metadata of the server-side
The target metadata file is read in pond；
Logging modle, for the target metadata file to be back to the client, and by the target metadata file
It records with the routing information of the target metadata file to preset list to be restored, to record the data to be restored.
9. a kind of restorer of Metadata Service characterized by comprising
Memory, for storing computer program；
Processor realizes the Metadata Service as described in claim 1-5 any one when for executing the computer program
Restoration methods the step of.
10. a kind of readable storage medium storing program for executing, which is characterized in that be stored with computer program, the meter on the readable storage medium storing program for executing
The step of the restoration methods of the Metadata Service as described in claim 1-5 any one is realized when calculation machine program is executed by processor
Suddenly.
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| CN201811506253.0A CN109669814A (en) | 2018-12-10 | 2018-12-10 | A kind of restoration methods of Metadata Service, device, equipment and readable storage medium storing program for executing |
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| CN112612646A (en) * | 2020-12-25 | 2021-04-06 | 深圳市科力锐科技有限公司 | Application quick recovery method, device, equipment and storage medium |
| CN112882863A (en) * | 2021-02-23 | 2021-06-01 | 中国工商银行股份有限公司 | Method, device and system for recovering data and electronic equipment |
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| CN108880906A (en) * | 2018-07-06 | 2018-11-23 | 郑州云海信息技术有限公司 | A kind of fault recovery method of Metadata Service, server, client and system |
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| CN102654863A (en) * | 2011-03-02 | 2012-09-05 | 华北计算机***工程研究所 | Real-time database history data organizational management method |
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| CN112612646A (en) * | 2020-12-25 | 2021-04-06 | 深圳市科力锐科技有限公司 | Application quick recovery method, device, equipment and storage medium |
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Application publication date: 20190423 |