公开(公告)号：US11599440B2

公开(公告)日：2023-03-07

申请号：US17663253

申请日：2022-05-13

Applicant: Snowflake Inc.

Inventor： Benoit Dageville ,  Johan Harjono ,  Simon Holm Jensen ,  Kunal Prafulla Nabar ,  Steven James Pelley

IPC: G06F11/30 ,  G06F16/2458 ,  G06F11/34 ,  G06F16/242

Abstract: Techniques for automated query retry in a database platform include assigning by at least one hardware processor a first execution of a query directed to database data to a first execution node of a plurality of execution nodes of an execution platform. The first execution node uses a first set of configurations during the first execution. The techniques further include determining that the first execution of the query by the first execution node results in a failed execution. The query is transferred to a second execution node of the plurality of execution nodes. A second execution of the query at the second execution node is caused. The second execution node uses a second set of configurations during the second execution. A cause of the failed execution at the first execution node is determined based on a result of the second execution of the query at the second execution node.

公开(公告)号：US20230069578A1

公开(公告)日：2023-03-02

申请号：US17936169

申请日：2022-09-28

Applicant: Snowflake Inc.

Inventor： Johan Harjono ,  Daniel Geoffrey Karp ,  Rares Radut ,  Samir Rehmtulla ,  Arthur Kelvin Shi ,  Thanakul WATTANAWONG

IPC: G06F16/182 ,  G06F16/28

Abstract: The subject technology selects a particular zone among multiple zones based on a target skew to meet a global balancing of cluster instances. The subject technology deploys a particular type of cluster instance to the particular zone. The subject technology, for each zone from the multiple zones, determines a respective number of cluster instances. The subject technology identifies a second particular type of cluster instance to remove based on a total number of the second particular type of cluster instance in the multiple zones and a second total number of the particular type of cluster instance in the multiple zones. The subject technology removes the second particular type of cluster instance from a second particular zone to meet the global balancing of cluster instances in the multiple zones.

公开(公告)号：US11494369B2

公开(公告)日：2022-11-08

申请号：US17536180

申请日：2021-11-29

Applicant: Snowflake Inc.

Inventor： Benoit Dageville ,  Johan Harjono ,  Kunal Prafulla Nabar ,  Steven James Pelley

IPC: G06F16/24 ,  G06F16/23 ,  G06F16/2455

Abstract: Systems, methods, and devices for retrying a query. A method includes receiving a query directed to database data and assigning execution of the query to one or more execution nodes of an execution platform, the one or more execution nodes configured to execute the query on a first version of a database platform. The method includes determining that execution of the query was unsuccessful. The method includes assigning a first retry execution of the query to the one or more execution nodes of the execution platform and determining whether a regression or an intermittent fault caused the execution of the query to be unsuccessful based at least in part on whether the first retry execution of the query was successful or unsuccessful.

公开(公告)号：US20220327040A1

公开(公告)日：2022-10-13

申请号：US17809780

申请日：2022-06-29

Applicant: Snowflake Inc.

Inventor： Benoit Dageville ,  Johan Harjono ,  Simon Holm Jensen ,  Kunal Prafulla Nabar ,  Steven James Pelley

IPC: G06F11/30 ,  G06F16/2458 ,  G06F11/34 ,  G06F16/242

Abstract: Techniques for automated query retry in a database platform include decoding, by at least one hardware processor, a query directed to database data from a client account of a database platform. The method further includes decoding, by the at least one hardware processor, an indication that execution of the query on at least one computing node of the database platform results in a failed execution. The method further includes configuring a processing loop with continuous retry executions of the query on the at least one computing node based on the indication. The method further includes exiting the processing loop based on detecting a retry execution of the continuous retry executions results in at least one successful execution of the query. The method includes logging each attempt to execute the query during the continuous retry executions in a query status log until the at least one successful execution of the query.

公开(公告)号：US20220222161A1

公开(公告)日：2022-07-14

申请号：US17657393

申请日：2022-03-31

Applicant: Snowflake, Inc.

Inventor： Benoit Dageville ,  Johan Harjono ,  Simon Holm Jensen ,  Kunal Prafulla Nabar ,  Steven James Pelley

IPC: G06F11/30 ,  G06F11/32 ,  G06F16/248 ,  G06F16/2458 ,  G06F16/242 ,  G06F11/34 ,  G06F11/14

Abstract: Disclosed herein are embodiments of systems and methods for query-attempt processing in a database environment. In an embodiment, a database platform receives a query, and operates a first query manager of the database platform to manage a first attempt to execute the query. Based on determining that the attempt to execute the query was unsuccessful, the database platform identifies a second query manager of the database platform as implementing a same version of the database platform as the first query manager, and operates the second query manager to manage a first retry attempt to execute the query.

公开(公告)号：US20210064503A1

公开(公告)日：2021-03-04

申请号：US17007589

申请日：2020-08-31

Applicant: Snowflake Inc.

Inventor： Benoit Dageville ,  Johan Harjono ,  Simon Holm Jensen ,  Kunal Prafulla Nabar ,  Steven James Pelley

IPC: G06F11/30 ,  G06F16/2458 ,  G06F11/34 ,  G06F16/242

Abstract: Systems, methods, and devices for retrying a query. A method includes receiving, by a first database query manager, a query directed to database data from a client account. The method includes assigning an original execution of the query to one or more execution nodes of an execution platform. The method includes determining the original execution of the query was unsuccessful. The method includes transferring the query to a second database query manager configured to manage internal tasks for improving operation of a database platform that are not received from client accounts. The method includes assigning, by the second database query manager, a retry execution of the query to one or more execution nodes of an execution platform.

公开(公告)号：US12164405B2

公开(公告)日：2024-12-10

申请号：US18160720

申请日：2023-01-27

Applicant: Snowflake Inc.

Inventor： Benoit Dageville ,  Johan Harjono ,  Simon Holm Jensen ,  Kunal Prafulla Nabar ,  Steven James Pelley

IPC: G06F11/30 ,  G06F11/34 ,  G06F16/242 ,  G06F16/2458

Abstract: Techniques for automated query retry in a database platform include decoding, by at least one hardware processor, a query directed to database data. The query is received by a first management node from a client account of a database system. The method further includes configuring an execution of the query by a first computing node associated with the first management node. The method includes detecting the execution of the query results in a failed execution. The query is transferred from the first management node to a second management node based on the failed execution. The second management node is configured to process tasks that are internal to the database system. A retry execution of the query by a second computing node is configured. The second computing node is associated with the second management node. A cause of the failed execution is determined based on a result of the retry execution.

公开(公告)号：US20240061709A1

公开(公告)日：2024-02-22

申请号：US18497260

申请日：2023-10-30

Applicant: Snowflake, Inc.

Inventor： Johan Harjono ,  Daniel Geoffrey Karp ,  Kunal Prafulla Nabar ,  Rares Radut ,  Arthur Kelvin Shi

IPC: G06F9/50 ,  G06F9/355

CPC classification number: G06F9/5005 ,  G06F9/3555 ,  G06F9/505 ,  G06F9/5077 ,  G06F9/5083

Abstract: Techniques described herein can optimize usage of computing resources in a data system. Dynamic throttling can be performed locally on a computing resource in the foreground and autoscaling can be performed in a centralized fashion in the background. Dynamic throttling can lower the load without overshooting while minimizing oscillation and reducing the throttle quickly. Autoscaling may involve scaling in or out the number of computing resources in a cluster as well as scaling up or down the type of computing resources to handle different types of situations.

公开(公告)号：US11842215B2

公开(公告)日：2023-12-12

申请号：US18161044

申请日：2023-01-28

Applicant: Snowflake Inc.

Inventor： Johan Harjono ,  Daniel Geoffrey Karp ,  Kunal Prafulla Nabar ,  Rares Radut ,  Arthur Kelvin Shi

IPC: G06F9/50 ,  G06F9/355

CPC classification number: G06F9/5005 ,  G06F9/3555 ,  G06F9/505 ,  G06F9/5077 ,  G06F9/5083

Abstract: Techniques described herein can optimize usage of computing resources in a data system. Dynamic throttling can be performed locally on a computing resource in the foreground and autoscaling can be performed in a centralized fashion in the background. Dynamic throttling can lower the load without overshooting while minimizing oscillation and reducing the throttle quickly. Autoscaling may involve scaling in or out the number of computing resources in a cluster as well as scaling up or down the type of computing resources to handle different types of situations.

公开(公告)号：US11599389B2

公开(公告)日：2023-03-07

申请号：US17463366

申请日：2021-08-31

Applicant: Snowflake Inc.

Inventor： Johan Harjono ,  Daniel Geoffrey Karp ,  Kunal Prafulla Nabar ,  Rares Radut ,  Arthur Kelvin Shi

IPC: G06F9/50

Abstract: Techniques described herein can optimize usage of computing resources in a data system. Dynamic throttling can be performed locally on a computing resource in the foreground and autoscaling can be performed in a centralized fashion in the background. Dynamic throttling can lower the load without overshooting while minimizing oscillation and reducing the throttle quickly. Autoscaling may involve scaling in or out the number of computing resources in a cluster as well as scaling up or down the type of computing resources to handle different types of situations.