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    ONLINE INDEX CREATION FOR MULTI-VERSION DATABASE WITHOUT TABLE LOCKS
    31.
    发明申请
    ONLINE INDEX CREATION FOR MULTI-VERSION DATABASE WITHOUT TABLE LOCKS 有权

    公开(公告)号：US20240394244A1

    公开(公告)日：2024-11-28

    申请号：US18790664

    申请日：2024-07-31

    Applicant: Snowflake Inc.

    Inventor： Cristian Diaconu ,  Nikolaos Romanos Katsipoulakis ,  Alexander Miller ,  Dimitrios Tsirogiannis ,  William Waddington ,  Zhaohui Zhang

    IPC: G06F16/23 ,  G06F16/22

    Abstract: The subject technology initiates an online index building process of an index of a hybrid table. The subject technology includes, in the index, a new index record for each record from the hybrid table. The subject technology validates the index. The subject technology retrieves a first metadata version of the hybrid table from a metadata database. The subject technology retrieves a second metadata version of the hybrid table from a distributed data store. The subject technology compares the first metadata version with the second metadata version. The subject technology determines that the second metadata version is less than or equal to the first metadata version. The subject technology, in response to successfully validating the index, indicates in a particular entry of the index that validation of the index has succeeded.

    Sharing events and other metrics in native applications
    32.
    发明授权
    Sharing events and other metrics in native applications 有权

    公开(公告)号：US12153971B2

    公开(公告)日：2024-11-26

    申请号：US18243609

    申请日：2023-09-07

    Applicant: Snowflake Inc.

    Inventor： Damien Carru ,  Pui Kei Johnston Chu ,  Unmesh Jagtap ,  Xiaodi Ke ,  Haroldo Level ,  Subramanian Muralidhar ,  James Pan ,  Steven Parkes ,  Xie Xu ,  Tyson J. Hamilton

    IPC: G06F9/54 ,  G06F16/25

    Abstract: Disclosed is an execution information sharing system that duplicates execution information to a provider target (and other targets) as it is being loaded to a consumer target. A first log information object and a second log information object are generated. The first and second log information objects comprise information indicating a consumer target and information indicating a provider target respectively where execution information generated by an application shared with a consumer account of a data exchange is written. A first event unloader and a second event unloader are generated based on the first and second log information objects respectively, wherein the first and second event unloaders are both linked to the application using a mapping. In response to receiving execution information from the application, the execution information is forwarded to the consumer target and the provider target using the first event unloader and the second event unloader respectively.

    Query processing using a distributed stop operator
    33.
    发明授权
    Query processing using a distributed stop operator 有权

    公开(公告)号：US12153602B2

    公开(公告)日：2024-11-26

    申请号：US17815389

    申请日：2022-07-27

    Applicant: Snowflake Inc.

    Inventor： Sebastian Breß ,  Moritz Eyssen ,  Max Heimel

    IPC: G06F16/00 ,  G06F16/2455 ,  G06F16/27

    Abstract: A global and local row count limit associated with a limit query are received by a stop operator of a first execution node among a set of execution nodes that are assigned to process the limit query. Local distributed row count data is generated based on a local row count corresponding to a number of rows output by the first execution node in processing the query. Based on determining the local row count satisfies the local limit, the first execution node buffers rows produced in processing the query. The local distributed row count data is updated based on remote distributed row count data received from a second execution node. A stopping condition is detected based on determining the global limit is satisfied based on updated local distributed row count data and query processing by the first execution node based on detecting the stopping condition.

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