公开(公告)号：US11423081B1

公开(公告)日：2022-08-23

申请号：US17390969

申请日：2021-08-01

Applicant: Snowflake Inc.

Inventor： Elliott Brossard ,  Sukruth Komarla Sukumar ,  Isaac Kunen ,  Ju-Yi Kuo ,  Jonathan Leang ,  Edward Ma ,  Schuyler James Manchester ,  Polita Paulus ,  Saurin Shah ,  Igor Zinkovsky

IPC: G06F16/00 ,  G06F16/901 ,  G06F16/955 ,  G06F16/2455 ,  G06F16/22 ,  G06F16/908

Abstract: A file access system for user defined functions (UDFs) can be implemented on a distributed database system. The system can store UDF signatures and interfaces (e.g., classes, sub-classes) that can be called by other users. Upon a UDF being called, one or more interface objects (e.g., InputStream) can be created and requests transferred to a execution node via a network channel. The execution node can implement multiple threads that are authorized and download file data from a staging location (e.g., internal stage, external stage) concurrently.

公开(公告)号：US12118038B2

公开(公告)日：2024-10-15

申请号：US18063253

申请日：2022-12-08

Applicant: Snowflake Inc.

Inventor： Elliott Brossard ,  Sukruth Komarla Sukumar ,  Isaac Kunen ,  Ju-Yi Kuo ,  Jonathan Lee Leang ,  Edward Ma ,  Schuyler James Manchester ,  Polita Paulus ,  Saurin Shah ,  Igor Zinkovsky

IPC: G06F16/00 ,  G06F16/22 ,  G06F16/2455 ,  G06F16/901 ,  G06F16/908 ,  G06F16/955

CPC classification number: G06F16/9017 ,  G06F16/2282 ,  G06F16/24568 ,  G06F16/908 ,  G06F16/955

Abstract: A method includes decoding, by at least one hardware processor, a request for a user-defined function (UDF). The request includes a reference to one or more files. The method further includes generating, by the at least one hardware processor, the UDF based on the request. The UDF includes a file reference object with file path information corresponding to the reference. The file path information identifies a file path to the one or more files. A UDF call into the UDF is detected. The UDF call specifies the file path information. The UDF call is processed to generate result data using the one or more files.

公开(公告)号：US20240176763A1

公开(公告)日：2024-05-30

申请号：US18190198

申请日：2023-03-27

Applicant: Snowflake Inc.

Inventor： Elliott Brossard ,  Sukruth Komarla Sukumar ,  Isaac Kunen ,  Ju-Yi Kuo ,  Jonathan Lee Leang ,  Edward Ma ,  Schuyler James Manchester ,  Polita Paulus ,  Saurin Shah ,  Igor Zinkovsky

IPC: G06F16/182 ,  G06F9/54 ,  G06F16/13 ,  G06F16/14 ,  G06F16/176

CPC classification number: G06F16/183 ,  G06F9/547 ,  G06F16/13 ,  G06F16/148 ,  G06F16/176

Abstract: Techniques for accessing data objects using UDF streams include decoding by at least one hardware processor of a first computing node, a first request for a UDF. The first request is generated at a second computing node by one of a plurality of input streams of the UDF. A second request for one or more data objects associated with the UDF is generated at the first computing node using an execution thread assigned to the first request. An authorization of the execution thread is performed using data access rights assigned to the first request. The one or more data objects are retrieved based on the authorization in response to the second request. The one or more data objects are stored in a storage location accessible by the execution thread.