公开(公告)号：US20250068640A1

公开(公告)日：2025-02-27

申请号：US18787807

申请日：2024-07-29

Applicant: Snowflake Inc.

Inventor： Mihir Dharamshi ,  Cristian Diaconu ,  Chen Luo ,  Andrew McCormick ,  Corbin McEihanney ,  Joshua Slocum ,  Wumengjian Zhu

IPC: G06F16/25 ,  G06F16/11 ,  G06F16/172 ,  G06F16/23

Abstract: The subject technology receives, by an execution node, blob metadata from a key-value store, the blob metadata including information related to a set of blob files. The subject technology determines, by the execution node using the blob metadata, whether a copy of each of the set of blob files is stored in a local cache of the execution node. The subject technology transforms at least one blob file, retrieved from a blob store, to a second file in a column file format, the at least one blob file being in a first format that is different than the column file format, the transforming comprising at least converting a particular snapshot file from the at least one blob file to a particular set of rowsets and writing the set of rowsets into the second file in the column file format. The subject technology stores the second file in the local cache.