CN105353988A - Metadata reading and writing method and device - Google Patents
Metadata reading and writing method and device Download PDFInfo
- Publication number
- CN105353988A CN105353988A CN201510779632.7A CN201510779632A CN105353988A CN 105353988 A CN105353988 A CN 105353988A CN 201510779632 A CN201510779632 A CN 201510779632A CN 105353988 A CN105353988 A CN 105353988A
- Authority
- CN
- China
- Prior art keywords
- data block
- meta data
- metadata
- timestamp
- service
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/28—Databases characterised by their database models, e.g. relational or object models
- G06F16/284—Relational databases
Abstract
The invention provides a metadata reading and writing method and device. The metadata reading and writing method comprises the steps of dividing metadata into multiple metadata blocks, wherein each metadata block carries with a recently updated timestamp; and when a metadata service reads a metadata copy pre-stored in a memory, determining a reading mode of the metadata blocks based on timestamps of the metadata blocks in a buffer area and timestamps in a message queue. As the metadata are divided into blocks according to logics, the metadata copy is pre-stored in the memory for each metadata service, each metadata block carries with the recently updated timestamp, and the reading mode of each metadata block is determined based on comparison the timestamps in the buffer area with the timestamps in the message queue, the reading and writing efficiency of the metadata is increased to a certain extent, and the performance of the metadata service also can be ensured when the amount of the concurrent data reading and writing operations is great.
Description
Technical field
The application relates to computer memory technical field, particularly relates to a kind of metadata reading/writing method and device.
Background technology
In Large Distributed Storage Systems, metadata information is the core of whole storage system, and in order to ensure the availability of system, metadata needs to do two standby, even how standby usually.In addition, between the many backups of metadata, must strong consistency be kept, when avoiding system to switch between many backups, cause the situation that the state of data object is inconsistent.Meanwhile, because Large Distributed Storage Systems input and output (IO, InputOutput) data volume is comparatively large and read-write operation frequent, also higher to the read-write rate requirement of metadata information.
At present, in existing Large Distributed Storage Systems, the two standby or how standby of Metadata Service can be realized by technology such as HeartBeat, data consistency between many backups can be reached by Double-Write technology.
But, in order to keep the strong consistency of metadata, when to the read operation of data object frequently, especially read-write operation concurrency is larger time; usually can cause the synchronous of daily record and archive operation simultaneously; instantaneously add service load, in this case, there is obvious bottleneck in Metadata Service performance.
Prior art deficiency is:
The synchronous of daily record and archive operation can be caused when data read-write operation concurrency is larger simultaneously, cause Metadata Service hydraulic performance decline.
Summary of the invention
The embodiment of the present application proposes a kind of metadata reading/writing method and device, can cause the synchronous of daily record and archive operation simultaneously, cause the technical matters of Metadata Service hydraulic performance decline to solve in prior art when data read-write operation concurrency is larger.
The embodiment of the present application provides a kind of metadata reading/writing method, comprises the steps:
Metadata is divided into multiple meta data block, and described meta data block carries the timestamp of recent renewal;
Metadata Service, when the metadata copy of reading pre-stored in internal memory, according to the timestamp in the timestamp of meta data block in buffer zone and message queue, determines the reading manner of meta data block.
The embodiment of the present application provides a kind of metadata read-write equipment, comprising:
Piecemeal module, for metadata is divided into multiple meta data block, described meta data block carries the timestamp of recent renewal;
Read operation module, for Metadata Service when the metadata copy of reading pre-stored in internal memory, according to the timestamp in the timestamp of meta data block in buffer zone and message queue, determines the reading manner of meta data block.
Beneficial effect is as follows:
The metadata reading/writing method that the embodiment of the present application provides and device, be divided into multiple meta data block by metadata, and described meta data block carries the timestamp of recent renewal; Metadata Service, when the metadata copy of reading pre-stored in internal memory, according to the timestamp in the timestamp of meta data block in buffer zone and message queue, determines the reading manner of meta data block.Owing to metadata being pressed logic partitioning in the embodiment of the present application, and for Metadata Service, metadata copy has been prestored all within it in depositing, described meta data block carries the timestamp of recent renewal, the reading manner determining meta data block is contrasted according to timestamp in timestamp in buffer zone and message queue, thus improve the read-write efficiency of metadata to a certain extent, when data read-write operation concurrency is larger, the performance of Metadata Service also can be guaranteed.
Accompanying drawing explanation
The specific embodiment of the application is described below with reference to accompanying drawings, wherein:
Fig. 1 shows the schematic flow sheet that in the embodiment of the present application, metadata reading/writing method is implemented;
Fig. 2 shows the data flow schematic diagram of Metadata Service and metadata copy thereof in the embodiment of the present application;
Fig. 3 shows metadata refresh flow schematic diagram in the embodiment of the present application;
Fig. 4 shows the structural representation of metadata read-write equipment in the embodiment of the present application.
Embodiment
In order to the technical scheme and advantage that make the application are clearly understood, be described in more detail below in conjunction with the exemplary embodiment of accompanying drawing to the application, obviously, described embodiment is only a part of embodiment of the application, instead of all embodiments is exhaustive.And when not conflicting, the embodiment in this explanation and the feature in embodiment can be combined with each other.
For the deficiencies in the prior art, the embodiment of the present application proposes a kind of metadata reading/writing method and device, is described below.
Fig. 1 shows the schematic flow sheet that in the embodiment of the present application, metadata reading/writing method is implemented, and as shown in the figure, described metadata reading/writing method can comprise the steps:
Step 101, metadata is divided into multiple meta data block, described meta data block carries the timestamp of recent renewal;
Step 102, Metadata Service, when the metadata copy of reading pre-stored in internal memory, according to the timestamp in the timestamp of meta data block in buffer zone and message queue, determine the reading manner of meta data block.
Inventor notices in invention process:
Current, RDBMS is ripe already, and database service is stablized, and in the databases such as redo, undo, technology ensure that data integrity.Carried out the read-write of data by the SQL statement of standard, eliminate the work of exploitation storage engines.
Therefore, the Metadata Service in the embodiment of the present application can be based upon on the basis of relevant database.
Secondly, in distributed memory system, in order to improve metadata read-write efficiency, metadata can be pressed logic partitioning by the embodiment of the present application, and meta data block all can with the timestamp information of recent renewal; And for multiple Metadata Service, such as, inquire about (query) service, renewal (update) service, block (chunk) service, then the memory metadata copy of oneself can be all set.
Each service is when reading respective memory metadata copy, and the timestamp in contrast buffer zone in the timestamp of data block and message queue, determines whether up-to-date (reduced time stamp), and then determine the reading manner of meta data block.
Fig. 2 shows the data flow schematic diagram of Metadata Service and metadata copy thereof in the embodiment of the present application, as shown in the figure,
Inquiry service is that querying server QueryServer obtains metadata MetaData and the metadata buffer zone MetaDataCache deposited to querying server QueryServer to meta data server MetaServer;
Update service is that the metadata MetaData in the metadata buffer zone MetaDataCache of described update server UpdateServer is write described meta data server MetaServer by update server UpdateServer;
Block service is that block server ChunkServer obtains metadata MetaData and the metadata buffer zone MetaDataCache deposited to block server ChunkServer to meta data server MetaServer.
Other Metadata Services can also be had, illustrate no longer one by one at this.
Wherein, coding Code and time stamp T imstamp can be comprised in message queue Message.
Owing to metadata being pressed logic partitioning in the embodiment of the present application, and for Metadata Service, metadata copy has been prestored all within it in depositing, described meta data block carries the timestamp of recent renewal, the reading manner determining meta data block is contrasted according to timestamp in timestamp in buffer zone and message queue, thus improve the read-write efficiency of metadata to a certain extent, when data read-write operation concurrency is larger, the performance of Metadata Service also can be guaranteed.
In enforcement, described metadata is divided into multiple meta data block after, described method may further include:
Described meta data block is encoded, described meta data block be encoded to the OR operation result that the tables of data relevant to described meta data block encode.
In the embodiment of the present application, metadata can be carried out encode (BitSet) by after logic partitioning, in concrete enforcement, metadata block encoding strategy can be as follows:
In Metadata Service, data object information can be stored in list structure, and all metadatabase tables can be carried out 128bit binary coding by the embodiment of the present application, and rule can be: from low level to a high position, and a table takies a bit.Such as: 0X00000001,0X00000002 ... 0X0000F000 ....
Metadata logic partitioning can be single table or multilist conjunctive query acquired results, and therefore, logical block coding rule can be: the OR operation result of involved table coding.Such as: meta data block A is connected (join) by 0X00000002 with 0X0000F000 to operate gained, so the coding of meta data block A can be 0X0000F002.
In enforcement, described described meta data block encoded after, described method may further include:
The coding of described meta data block and message coding are carried out AND-operation, when described AND-operation result is non-vanishing, upgrades described meta data block and logging timestamp.
Continue to be described as follows with the above-mentioned example that is exemplified as:
As certain service write operation meta data block A correlation table 0X0000F000, shape to be there is as 0X0000F000-201509264516 message in message queue, during get operation, logical block (meta data block) coding and message coding carry out AND-operation, 0X0000F002 & 0X0000F000=0X0000F000, result is non-vanishing, so can judge that this logic partitioning A needs to refresh, thus upgrades described meta data block A.
Further, in order to ensure the strong consistency of metadata, the embodiment of the present application can also be implemented in the following manner.
In enforcement, described method may further include:
When Metadata Service generation write operation, by remote procedure call (RPC, RemoteProcedureCallProtocol) revise meta data block and timestamp thereof described in described Metadata Service, by message system, the coding of described meta data block and timestamp thereof are pushed to the buffer zone of Metadata Service.
In the embodiment of the present application, in order to ensure the strong consistency of metadata, when there is write operation in certain service, first, can by respective meta-data block message and timestamp in a remote procedure call amendment Metadata Service, then, block forecast and update time are stabbed the buffer zone being pushed to each service by message system by metadata service system.
In enforcement, the timestamp in the described timestamp according to meta data block in buffer zone and message queue, determine the reading manner of meta data block, be specifically as follows:
When the timestamp in the timestamp and message queue of meta data block in described buffer zone is inconsistent, extract described meta data block by remote procedure call from service end.
In the embodiment of the present application, can according to the contrast of the timestamp of message queue and buffer zone, determine the reading manner of meta data block, when the timestamp in the timestamp and message queue of meta data block in described buffer zone is inconsistent, extract described meta data block by remote procedure call from service end; When the timestamp of meta data block is consistent with the timestamp in message queue in described buffer zone, the described meta data block in buffer zone directly can be read.
Fig. 3 shows metadata refresh flow schematic diagram in the embodiment of the present application, as shown in the figure, can comprise the steps:
Step 301, beginning;
Meta data block coding in step 302, acquisition buffer zone;
Step 303, judge whether to exist in message queue the timestamp of described meta data block coding;
When it is present, step 307 is performed;
When not existing, perform step 304;
Step 304, obtain the timestamp of meta data block described in described message queue;
Step 305, contrast message queue and the timestamp of buffer zone, judge whether timestamp is up-to-date:
If not up-to-date, then perform step 306;
If up-to-date, then perform step 307;
Step 306, by RPC process from server end extracting metadata block;
Step 307, reading metadata;
Step 308, end.
Based on same inventive concept, a kind of metadata read-write equipment is additionally provided in the embodiment of the present application, the principle of dealing with problems due to these equipment is similar to a kind of metadata reading/writing method, and therefore the enforcement of these equipment see the enforcement of method, can repeat part and repeat no more.
Fig. 4 shows the structural representation of metadata read-write equipment in the embodiment of the present application, and as shown in the figure, described metadata read-write equipment can comprise:
Piecemeal module 401, for metadata is divided into multiple meta data block, described meta data block carries the timestamp of recent renewal;
Read operation module 402, for Metadata Service when the metadata copy of reading pre-stored in internal memory, according to the timestamp in the timestamp of meta data block in buffer zone and message queue, determines the reading manner of meta data block.
In enforcement, described device may further include:
Coding module 403, for described metadata is logically divided into multiple meta data block after, described meta data block is encoded, described meta data block be encoded to the OR operation result that the tables of data relevant to described meta data block encode.
In enforcement, described device may further include:
Update module 404, for described described meta data block encoded after, the coding of described meta data block and message coding are carried out AND-operation, when described AND-operation result is non-vanishing, upgrade described meta data block and logging timestamp.
In enforcement, described device may further include:
Write operation module 405, for when Metadata Service generation write operation, revise meta data block and timestamp thereof described in described Metadata Service by remote procedure call, by message system, the coding of described meta data block and timestamp thereof are pushed to the buffer zone of Metadata Service.
In enforcement, described read operation module specifically may be used for, when the timestamp in the timestamp and message queue of meta data block in described buffer zone is inconsistent, extracting described meta data block by remote procedure call from service end.
For convenience of description, each several part of the above device is divided into various module or unit to describe respectively with function.Certainly, the function of each module or unit can be realized in same or multiple software or hardware when implementing the application.
Those skilled in the art should understand, the embodiment of the application can be provided as method, system or computer program.Therefore, the application can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the application can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disk memory, CD-ROM, optical memory etc.) of computer usable program code.
The application describes with reference to according to the process flow diagram of the method for the embodiment of the present application, equipment (system) and computer program and/or block scheme.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block scheme and/or square frame and process flow diagram and/or block scheme and/or square frame.These computer program instructions can being provided to the processor of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computing machine or other programmable data processing device produce device for realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be loaded in computing machine or other programmable data processing device, make on computing machine or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computing machine or other programmable devices is provided for the step realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
Although described the preferred embodiment of the application, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the application's scope.
Claims (10)
1. a metadata reading/writing method, is characterized in that, comprises the steps:
Metadata is divided into multiple meta data block, and described meta data block carries the timestamp of recent renewal;
Metadata Service, when the metadata copy of reading pre-stored in internal memory, according to the timestamp in the timestamp of meta data block in buffer zone and message queue, determines the reading manner of meta data block.
2. the method for claim 1, is characterized in that, described metadata is divided into multiple meta data block after, comprise further:
Described meta data block is encoded, described meta data block be encoded to the OR operation result that the tables of data relevant to described meta data block encode.
3. method as claimed in claim 2, is characterized in that, described described meta data block encoded after, comprise further:
The coding of described meta data block and message coding are carried out AND-operation, when described AND-operation result is non-vanishing, upgrades described meta data block and logging timestamp.
4. the method for claim 1, is characterized in that, comprises further:
When Metadata Service generation write operation, revise meta data block and timestamp thereof described in described Metadata Service by remote procedure call, by message system, the coding of described meta data block and timestamp thereof are pushed to the buffer zone of Metadata Service.
5. the method for claim 1, is characterized in that, the timestamp in the described timestamp according to meta data block in buffer zone and message queue, determines the reading manner of meta data block, is specially:
When the timestamp in the timestamp and message queue of meta data block in described buffer zone is inconsistent, extract described meta data block by remote procedure call from service end.
6. a metadata read-write equipment, is characterized in that, comprising:
Piecemeal module, for metadata is divided into multiple meta data block, described meta data block carries the timestamp of recent renewal;
Read operation module, for Metadata Service when the metadata copy of reading pre-stored in internal memory, according to the timestamp in the timestamp of meta data block in buffer zone and message queue, determines the reading manner of meta data block.
7. device as claimed in claim 6, is characterized in that, comprise further:
Coding module, for described metadata is logically divided into multiple meta data block after, described meta data block is encoded, described meta data block be encoded to the OR operation result that the tables of data relevant to described meta data block encode.
8. device as claimed in claim 7, is characterized in that, comprise further:
Update module, for described described meta data block encoded after, the coding of described meta data block and message coding are carried out AND-operation, when described AND-operation result is non-vanishing, upgrade described meta data block.
9. device as claimed in claim 6, is characterized in that, comprise further:
Write operation module, for when Metadata Service generation write operation, revise meta data block and timestamp thereof described in described Metadata Service by remote procedure call, by message system, the coding of described meta data block and timestamp thereof are pushed to the buffer zone of Metadata Service.
10. device as claimed in claim 6, it is characterized in that, when described read operation module is inconsistent specifically for the timestamp in the timestamp and message queue of meta data block in described buffer zone, extract described meta data block by remote procedure call from service end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510779632.7A CN105353988A (en) | 2015-11-13 | 2015-11-13 | Metadata reading and writing method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510779632.7A CN105353988A (en) | 2015-11-13 | 2015-11-13 | Metadata reading and writing method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105353988A true CN105353988A (en) | 2016-02-24 |
Family
ID=55329966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510779632.7A Pending CN105353988A (en) | 2015-11-13 | 2015-11-13 | Metadata reading and writing method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105353988A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107169126A (en) * | 2017-05-31 | 2017-09-15 | 华为技术有限公司 | A kind of log processing method and relevant device |
| CN109388646A (en) * | 2018-10-16 | 2019-02-26 | 新华三大数据技术有限公司 | Data processing method and device |
| CN111221857A (en) * | 2018-11-08 | 2020-06-02 | 华为技术有限公司 | Method and apparatus for reading data records from a distributed system |
| CN113467698A (en) * | 2020-03-30 | 2021-10-01 | 珠海全志科技股份有限公司 | Writing method and device based on file system, computer equipment and storage medium |
| CN113544635A (en) * | 2019-09-09 | 2021-10-22 | 华为技术有限公司 | Data processing method and device in storage system and storage system |
| CN115917526A (en) * | 2020-04-14 | 2023-04-04 | 谷歌有限责任公司 | Metadata management for transactional memory systems |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101040280A (en) * | 2004-08-31 | 2007-09-19 | 国际商业机器公司 | Metadata management |
| CN102508854A (en) * | 2011-09-29 | 2012-06-20 | 畅捷通信息技术股份有限公司 | Data access device and method |
| CN102929943A (en) * | 2012-09-28 | 2013-02-13 | 五八有限公司 | Data output method and device |
-
2015
- 2015-11-13 CN CN201510779632.7A patent/CN105353988A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101040280A (en) * | 2004-08-31 | 2007-09-19 | 国际商业机器公司 | Metadata management |
| CN102508854A (en) * | 2011-09-29 | 2012-06-20 | 畅捷通信息技术股份有限公司 | Data access device and method |
| CN102929943A (en) * | 2012-09-28 | 2013-02-13 | 五八有限公司 | Data output method and device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107169126A (en) * | 2017-05-31 | 2017-09-15 | 华为技术有限公司 | A kind of log processing method and relevant device |
| CN107169126B (en) * | 2017-05-31 | 2021-01-15 | 华为技术有限公司 | Log processing method and related equipment |
| CN109388646A (en) * | 2018-10-16 | 2019-02-26 | 新华三大数据技术有限公司 | Data processing method and device |
| CN111221857A (en) * | 2018-11-08 | 2020-06-02 | 华为技术有限公司 | Method and apparatus for reading data records from a distributed system |
| CN113544635A (en) * | 2019-09-09 | 2021-10-22 | 华为技术有限公司 | Data processing method and device in storage system and storage system |
| CN113467698A (en) * | 2020-03-30 | 2021-10-01 | 珠海全志科技股份有限公司 | Writing method and device based on file system, computer equipment and storage medium |
| CN115917526A (en) * | 2020-04-14 | 2023-04-04 | 谷歌有限责任公司 | Metadata management for transactional memory systems |
| CN115917526B (en) * | 2020-04-14 | 2023-12-29 | 谷歌有限责任公司 | Metadata management for transactional memory systems |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105353988A (en) | Metadata reading and writing method and device | |
| US10678808B2 (en) | Eager replication of uncommitted transactions | |
| US11093466B2 (en) | Incremental out-of-place updates for index structures | |
| US11068501B2 (en) | Single phase transaction commits for distributed database transactions | |
| JP6553822B2 (en) | Dividing and moving ranges in distributed systems | |
| US10929398B2 (en) | Distributed system with accelerator and catalog | |
| US9589041B2 (en) | Client and server integration for replicating data | |
| CN103617176A (en) | Method for achieving automatic synchronization of multi-source heterogeneous data resources | |
| CN111881223B (en) | Data management method, device, system and storage medium | |
| WO2013155752A1 (en) | Database and hadoop hybrid platform-oriented olap query processing method | |
| CN105808643A (en) | Redis memory database refreshing method | |
| CN103595797B (en) | Caching method for distributed storage system | |
| WO2019109854A1 (en) | Data processing method and device for distributed database, storage medium, and electronic device | |
| CN111651519B (en) | Data synchronization method, data synchronization device, electronic equipment and storage medium | |
| US20150006485A1 (en) | High Scalability Data Management Techniques for Representing, Editing, and Accessing Data | |
| KR102038529B1 (en) | System for processing real-time data modification of in-memory database | |
| CN110309233A (en) | Method, apparatus, server and the storage medium of data storage | |
| WO2023061249A1 (en) | Data processing method and system for distributed database, and device and storage medium | |
| WO2023077971A1 (en) | Transaction processing method and apparatus, and computing device and storage medium | |
| CN104750744A (en) | Method and device for synchronizing compressed data on basis of Oracle databases | |
| CN108228725B (en) | GIS application system based on distributed database | |
| US10838931B1 (en) | Use of stream-oriented log data structure for full-text search oriented inverted index metadata | |
| CN114925073A (en) | Distributed database architecture supporting flexible dynamic fragmentation and implementation method thereof | |
| CN111026783A (en) | Anti-jamming data storage method, system and device | |
| CN113672556A (en) | Batch file migration method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160224 |
|
| RJ01 | Rejection of invention patent application after publication |