公开(公告)号：US11249972B2

公开(公告)日：2022-02-15

申请号：US16718638

申请日：2019-12-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yidong Yang ,  Chenghua Liu ,  Yong Deng ,  Wenqi Zhu ,  Bingjian Hou

IPC: G06F16/22 ,  G06F16/27 ,  G06F16/23

Abstract: An index update method, including: receiving an index update request, where the index update request is used to instruct to create or delete a target index that is associated with a field in a logic table of a tenant; updating metadata information of the logic table in a database in response to the index update request; notifying a coordination service, where the coordination service is used to notify a second data access node to perform a local synchronization update; and after all second data access nodes finish local synchronization updates, performing a data asynchronization update. After the metadata information is updated in the database, an index is updated in two steps. In a first step, a local synchronization update is performed. In a second step, after all data access nodes finish local synchronization updates, a data asynchronization update is performed.

公开(公告)号：US20200272614A1

公开(公告)日：2020-08-27

申请号：US16718638

申请日：2019-12-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yidong Yang ,  Chenghua Liu ,  Yong Deng ,  Wenqi Zhu ,  Bingjian Hou

IPC: G06F16/22 ,  G06F16/27 ,  G06F16/23

Abstract: An index update method, including: receiving an index update request, where the index update request is used to instruct to create or delete a target index that is associated with a field in a logic table of a tenant; updating metadata information of the logic table in a database in response to the index update request; notifying a coordination service, where the coordination service is used to notify a second data access node to perform a local synchronization update; and after all second data access nodes finish local synchronization updates, performing a data asynchronization update. After the metadata information is updated in the database, an index is updated in two steps. In a first step, a local synchronization update is performed. In a second step, after all data access nodes finish local synchronization updates, a data asynchronization update is performed.

公开(公告)号：US10303691B2

公开(公告)日：2019-05-28

申请号：US15173971

申请日：2016-06-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jimin Wu ,  Qing Zhang ,  Chenghua Liu ,  Yong Deng

IPC: G06F16/21 ,  G06F16/22 ,  G06F16/23 ,  G06F16/248 ,  G06F16/2455 ,  G06F16/2457

Abstract: Embodiments of the present invention provide a column-oriented database processing method, where a column-oriented database includes a marker column and more than one data column, the data column is used to store specific data in a column store manner, a value of a marker bit of each row in the marker column is used to indicate validity of data that is located in a same row as the marker bit, and the method includes: receiving a query request sent by an application program, where the query request contains a query condition; querying the more than one data column according to the marker column and the query condition to obtain a query result that meets both the query condition and a requirement that a marker bit of the query result in the marker column is valid; and sending the query result to the application program.

公开(公告)号：US11308062B2

公开(公告)日：2022-04-19

申请号：US16718638

申请日：2019-12-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yidong Yang ,  Chenghua Liu ,  Yong Deng ,  Wenqi Zhu ,  Bingjian Hou

IPC: G06F16/22 ,  G06F16/27 ,  G06F16/23

Abstract: An index update method, including: receiving an index update request, where the index update request is used to instruct to create or delete a target index that is associated with a field in a logic table of a tenant; updating metadata information of the logic table in a database in response to the index update request; notifying a coordination service, where the coordination service is used to notify a second data access node to perform a local synchronization update; and after all second data access nodes finish local synchronization updates, performing a data asynchronization update. After the metadata information is updated in the database, an index is updated in two steps. In a first step, a local synchronization update is performed. In a second step, after all data access nodes finish local synchronization updates, a data asynchronization update is performed.

公开(公告)号：US20240172401A1

公开(公告)日：2024-05-23

申请号：US18424887

申请日：2024-01-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chenghua Liu ,  Xiaochu Li ,  Min Luo ,  Xiaolong Yan

IPC: H05K7/20

CPC classification number: H05K7/20736 ,  H05K7/20145

Abstract: A chassis for an edge device includes a cabinet and a heat exchange component. The heat exchange component is disposed in a space enclosed by the cabinet. The space in the cabinet is divided into a first space and a second space for placement an electronic device. The heat exchange component performs heat transfer between the first space and the second space. A first air inlet and a first air outlet are disposed in the first space, and an airflow entering from the first air inlet flows through a first surface of the heat exchange component and exits from the first air outlet.

公开(公告)号：US20160283558A1

公开(公告)日：2016-09-29

申请号：US15173971

申请日：2016-06-06

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Jimin Wu ,  Qing Zhang ,  Chenghua Liu ,  Yong Deng

IPC: G06F17/30

CPC classification number: G06F17/30528 ,  G06F17/30309 ,  G06F17/30315 ,  G06F17/30324 ,  G06F17/30356 ,  G06F17/30362 ,  G06F17/30492 ,  G06F17/30554

Abstract: Embodiments of the present invention provide a column-oriented database processing method, where a column-oriented database includes a marker column and more than one data column, the data column is used to store specific data in a column store manner, a value of a marker bit of each row in the marker column is used to indicate validity of data that is located in a same row as the marker bit, and the method includes: receiving a query request sent by an application program, where the query request contains a query condition; querying the more than one data column according to the marker column and the query condition to obtain a query result that meets both the query condition and a requirement that a marker bit of the query result in the marker column is valid; and sending the query result to the application program.

Abstract translation: 本发明的实施例提供了一种面向列的数据库处理方法，其中面向列的数据库包括标记列和多于一个数据列，数据列用于以列存储方式存储特定数据， 标记列中的每行的标记位用于指示位于与标记位相同行的数据的有效性，并且该方法包括：接收由应用程序发送的查询请求，其中查询请求包含查询 条件; 根据标记列和查询条件查询多个数据列，以获得满足查询条件的查询结果和标记列中查询结果的标记位有效的要求; 并将查询结果发送到应用程序。