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1. 发明授权

EP3082314B1 RESOURCE MANAGEMENT METHOD AND APPARATUS 有权
公开(公告)号：EP3082314B1
公开(公告)日：2019-05-22
申请号：EP14877644.6
申请日：2014-12-24
申请人： Huawei Technologies Co., Ltd.
发明人： HE, Guangwu , ZHU, Junhua
IPC分类号： H04L29/06

2. 发明公开

EP3425513A1 CACHE MANAGEMENT METHOD AND APPARATUS FOR NON-VOLATILE STORAGE DEVICE 有权
公开(公告)号：EP3425513A1
公开(公告)日：2019-01-09
申请号：EP17197683.0
申请日：2013-02-20
申请人： Huawei Technologies Co., Ltd.
发明人： ZHU, Junhua
IPC分类号： G06F12/08 , G06F12/12 , G06F12/0871 , G06F12/121 , G06F12/123
摘要： Embodiments of the present invention disclose a method and apparatus of cache management for a non-volatile storage device, and relate to the field of data processing technologies, which avoid frequent replacement of dirty pages, increase a service life of the storage device, reduce the implementation cost, and improve the execution efficiency. The embodiments of the present invention includes: determining a size relationship between a capacity sum of a clean page subpool and a dirty page subpool and a cache capacity; determining, when the capacity sum of the clean page subpool and the dirty page subpool is greater than or equal to the cache capacity, whether identification information of a to-be-accessed page is in a history list of clean pages or a history list of dirty pages; and when it is determined that the identification information of the to-be-accessed page is in the history list of clean pages, adding a first adjustment value to a clean subpool capacity threshold; or when the identification information of the to-be-accessed page is in the history list of dirty pages, subtracting a second adjustment value from the clean subpool capacity threshold. The embodiments of the present invention are mainly applied to cache management processes for non-volatile storage devices.

3. 发明授权

EP2846266B1 BUFFERING MANAGEMENT METHOD AND APPARATUS FOR NON-VOLATILE STORAGE DEVICE 有权
公开(公告)号：EP2846266B1
公开(公告)日：2018-06-27
申请号：EP13807299.6
申请日：2013-02-20
申请人： Huawei Technologies Co., Ltd.
发明人： ZHU, Junhua
IPC分类号： G06F12/0871 , G06F12/121 , G06F12/123
CPC分类号： G06F12/123 , G06F12/0246 , G06F12/0871 , G06F12/121 , G06F2212/214 , G06F2212/222 , G06F2212/502 , G06F2212/604 , G06F2212/7204
摘要： Embodiments of the present invention disclose a method and apparatus of cache management for a non-volatile storage device, and relate to the field of data processing technologies, which avoid frequent replacement of dirty pages, increase a service life of the storage device, reduce the implementation cost, and improve the execution efficiency. The embodiments of the present invention includes: determining a size relationship between a capacity sum of a clean page subpool and a dirty page subpool and a cache capacity; determining, when the capacity sum of the clean page subpool and the dirty page subpool is greater than or equal to the cache capacity, whether identification information of a to-be-accessed page is in a history list of clean pages or a history list of dirty pages; and when it is determined that the identification information of the to-be-accessed page is in the history list of clean pages, adding a first adjustment value to a clean subpool capacity threshold; or when the identification information of the to-be-accessed page is in the history list of dirty pages, subtracting a second adjustment value from the clean subpool capacity threshold. The embodiments of the present invention are mainly applied to cache management processes for non-volatile storage devices.

4. 发明公开

EP3113043A1 METHOD, DEVICE AND HOST FOR UPDATING METADATA STORED IN COLUMNS IN DISTRIBUTED FILE SYSTEM 有权
标题翻译：方法，设备和主机进行更新元数据存储了分布式文件系统柱
公开(公告)号：EP3113043A1
公开(公告)日：2017-01-04
申请号：EP15752007.3
申请日：2015-01-04
申请人： Huawei Technologies Co., Ltd.
发明人： DENG, Liqun , ZHU, Junhua
IPC分类号： G06F17/30
CPC分类号： G06F17/3012 , G06F3/061 , G06F3/0638 , G06F3/067 , G06F17/30091 , G06F17/30185 , G06F17/30194 , G06F17/30238
摘要： The present invention discloses a metadata updating method and apparatus based on columnar storage in a distributed file system, and a host, where the method includes: acquiring to-be-updated metadata in a data table of the distributed file system, splitting data records of the data table into multiple row groups on a row basis, and converting the data table into global file metadata and multiple row group files, where the row group file includes an actual data block, a data index block, a local metadata block, a metadata index block, and a file footer; determining whether the to-be-updated metadata belongs to the global file metadata, and if the to-be-updated metadata does not belong to the global file metadata, then: updating local metadata; and adding an updated local metadata block, an updated metadata index block, and an updated file footer to the multiple row group files according to updated local metadata. According to the method in the present invention, dynamic updating of metadata is implemented, which dramatically saves a time of executing an updating operation of this type and needed computing resources.
摘要翻译：本发明盘松元数据更新方法及基于柱状存储在分布式文件系统的装置，和一台主机，其中该方法包括：获取待更新的元数据中的分布式文件系统的数据表中，分割数据记录数据表分成多个行组行的基础上，并将数据表转换成全局文件元数据和多行组文件，其中，所述行包括groupfile的实际数据块，数据块索引，本地元数据块，元数据索引块，并且一个文件的页脚; 确定性采矿是否要被更新的元数据属于全局文件的元数据，如果要被更新的元数据不属于全局文件的元数据，则：更新本地的元数据; 并增加了更新的本地元数据块，以更新的元数据索引块，并且文件更新页脚到多个行组文件gemäß到更新本地的元数据。。根据本发明的方法中，元数据的动态更新被实现，其显着地节省了在更新这种类型的外科手术执行的时间和所需的计算资源。

5. 发明公开

EP3567829A1 RESOURCE MANAGEMENT METHOD AND APPARATUS 有权
公开(公告)号：EP3567829A1
公开(公告)日：2019-11-13
申请号：EP19161585.5
申请日：2014-12-24
申请人： Huawei Technologies Co., Ltd.
发明人： HE, Guangwu , ZHU, Junhua
IPC分类号： H04L29/06
摘要： Embodiments of the present invention provide a resource management method and apparatus. The resource management method of the present invention includes: selecting, by a resource manager RM, according to a type and a quantity of application masters AMs that need to be started in advance, resources from resources registered by a node manager NM, encapsulating the resources into multiple containers Containers matching the AMs that need to be started in advance, and starting the AMs that need to be started in advance in the matching Containers; and when the RM receives a job submitted by a client, checking, in the AMs that have been started in advance and according to information about the job, whether there is a matching AM to be used to execute the job, and if there is a matching AM to be used to execute the job, submitting the job to the matching AM for execution. In the embodiments of the present invention, it is implemented that, when a client submits a job, the job can be submitted to an AM that has been started in advance for execution, thereby reducing latency resulting from resource allocation and AM startup.

6. 发明公开

EP3373154A1 DATA QUERY METHOD AND APPARATUS, AND DATABASE SYSTEM 审中-公开
公开(公告)号：EP3373154A1
公开(公告)日：2018-09-12
申请号：EP15909443.2
申请日：2015-11-30
申请人： Huawei Technologies Co., Ltd.
发明人： WANG, Guoping , ZHU, Junhua
IPC分类号： G06F17/30
CPC分类号： G06F17/30466 , G06F17/30469
摘要： A data query method and apparatus, and a database system are provided. The method includes: receiving a data query request (S110); generating an original query plan according to the data query request (S1120); obtaining a candidate query plan set according to the original query plan (S1130); restructuring a join predicate in the original query plan (S1140); determining basic information of a restructured join predicate in the original query plan (S1150); determining a constraint condition of the restructured join predicate in the original query plan (S1160); determining an equal-cost query plan for the original query plan according to the basic information of the restructured join predicate in the original query plan and the constraint condition of the restructured join predicate in the original query plan (S1170); and performing querying according to the equal-cost query plan for the original query plan (S1180). According to the data query method and apparatus, and the database system, data query performance can be improved.

7. 发明公开

EP3082314A1 RESOURCE MANAGEMENT METHOD AND APPARATUS 有权
标题翻译：资源管理方法与装置
公开(公告)号：EP3082314A1
公开(公告)日：2016-10-19
申请号：EP14877644.6
申请日：2014-12-24
申请人： Huawei Technologies Co., Ltd.
发明人： HE, Guangwu , ZHU, Junhua
IPC分类号： H04L29/06
CPC分类号： G06F9/5027 , H04L67/1008
摘要： Embodiments of the present invention provide a resource management method and apparatus. The resource management method of the present invention includes: selecting, by a resource manager RM, according to a type and a quantity of application masters AMs that need to be started in advance, resources from resources registered by a node manager NM, encapsulating the resources into multiple containers Containers matching the AMs that need to be started in advance, and starting the AMs that need to be started in advance in the matching Containers; and when the RM receives a job submitted by a client, checking, in the AMs that have been started in advance and according to information about the job, whether there is a matching AM to be used to execute the job, and if there is a matching AM to be used to execute the job, submitting the job to the matching AM for execution. In the embodiments of the present invention, it is implemented that, when a client submits a job, the job can be submitted to an AM that has been started in advance for execution, thereby reducing latency resulting from resource allocation and AM startup.
摘要翻译：本发明实施例提供了一种资源管理方法和装置。本发明的资源管理方法包括：资源管理器RM根据需要预先启动的应用主设备AM的类型和数量，从节点管理器NM注册的资源中选择资源，封装资源将多个容器匹配需要预先启动的AM，并启动需要在匹配容器中预先启动的AM; 并且当RM接收到由客户提交的作业时，在已经预先启动的AM中并且根据关于作业的信息来检查是否存在用于执行作业的匹配的AM，并且如果存在将AM用于执行作业，将作业提交给匹配的AM进行执行。在本发明实施例中，实现了当客户端提交作业时，可以将作业提交给预先启动执行的AM，从而减少资源分配和AM启动导致的延迟。

8. 发明公开

EP2919130A1 METHOD AND SYSTEM FOR SYNCHRONIZING DISTRIBUTED DATABASE 审中-公开
标题翻译：用于同步分布式数据库的方法和系统
公开(公告)号：EP2919130A1
公开(公告)日：2015-09-16
申请号：EP13868638.1
申请日：2013-08-06
申请人： Huawei Technologies Co., Ltd.
发明人： ZHU, Junhua
IPC分类号： G06F17/30
CPC分类号： G06F11/1451 , G06F11/1464 , G06F11/2038 , G06F11/2048 , G06F11/2097 , G06F17/3033 , G06F17/30578 , G06F17/30581 , G06F2201/80 , G06F2201/82 , G06F2201/84
摘要： The present invention discloses a distributed database synchronization method and system. A distributed database includes a master server cluster and a backup server cluster, where the master server cluster includes a first master node and a second master node, and the backup server cluster includes a first backup node and a second backup node. The method includes: generating a hash tree of the master server cluster and a hash tree of the backup server cluster; determining a range hash tree of the second master node and a range hash tree of the second backup node that have inconsistent range hash values; determining a data unit to be synchronized in the second master node and a data unit to be synchronized in the second backup node; and performing data synchronization. In the present invention, because data units to be synchronized can be determined separately in each node, it can be achieved that data units to be synchronized are determined separately and simultaneously in multiple nodes, thereby saving time required for data consistency check, and further improving efficiency of data synchronization.
摘要翻译：本发明公开了一种分布式数据库同步方法和系统。分布式数据库包括主服务器集群和备份服务器集群，主服务器集群包括第一主节点和第二主节点，备份服务器集群包括第一备份节点和第二备份节点。该方法包括：生成主服务器集群哈希树和备份服务器集群哈希树; 确定具有不一致的范围散列值的所述第二主节点的范围散列树和所述第二备份节点的范围散列树; 确定所述第二主节点中待同步的数据单元和所述第二备份节点中待同步的数据单元; 并执行数据同步。在本发明中，由于待同步的数据单元可以在每个节点单独确定，因此可以实现在多个节点中分别同时确定需要同步的数据单元，从而节省了数据一致性检查所需的时间，并且进一步提高了数据同步的效率。

9. 发明公开

EP3627359A1 TRANSACTION PROCESSING METHOD, DEVICE AND EQUIPMENT 有权
公开(公告)号：EP3627359A1
公开(公告)日：2020-03-25
申请号：EP17912603.2
申请日：2017-06-05
申请人： Huawei Technologies Co., Ltd.
发明人： LIU, Zhe , ZHU, Junhua , LIN, Xiaoyong
IPC分类号： G06F17/30
摘要： This application provides a transaction processing method, apparatus, and device, and relates to the field of database technologies. The method includes: receiving a multi-partition transaction, where the multi-partition transaction is a transaction of performing an operation in at least two data partitions; obtaining data snapshots that respectively correspond to the at least two data partitions and that meet consistency; and performing the operation corresponding to the multi-partition transaction based on the data snapshots that respectively correspond to the at least two data partitions and that meet consistency. According to this application, data snapshots meeting consistency are obtained for data partitions related to a multi-partition transaction, and an operation corresponding to the multi-partition transaction is performed based on the data snapshots. Parallel execution of a read transaction and a write transaction is supported, to avoid blocking between the write transaction and the read transaction, thereby improving a system throughput and a service level.

10. 发明公开

EP3438847A1 METHOD AND DEVICE FOR DUPLICATING DATABASE IN DISTRIBUTED SYSTEM 审中-公开
公开(公告)号：EP3438847A1
公开(公告)日：2019-02-06
申请号：EP16899017.4
申请日：2016-04-22
申请人： Huawei Technologies Co., Ltd.
发明人： WANG, Guoping , ZHU, Junhua
IPC分类号： G06F17/30
摘要： A database replication method and apparatus for a distributed system are provided and relate to the database field. The method includes: sending, by a first partition of a secondary cluster to a coordination server, a timestamp of a multi-partition transaction newly added to the first partition; determining, by the coordination server, a target timestamp for the first partition based on the timestamp of the newly added multi-partition transaction and a multi-partition transaction timestamp, of each partition of the secondary cluster, stored on the coordination server; sending, by the coordination server, the target timestamp to the first partition; and executing, by the first partition, a replication log in the first partition based on the target timestamp. By maintaining a timestamp of a multi-partition transaction included in each partition of the secondary cluster, the coordination server determines which multi-partition transactions are present in all the partitions, and informs a corresponding partition which log records can be executed. In this way, the corresponding partition can execute, without waiting, a multi-partition transaction that is present in all the partitions but has not been executed, thereby avoiding data inconsistency and increasing replication efficiency.

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