Query dispatch and execution architecture

• US 10,540,351 B2
• Filed: 07/16/2018
• Issued: 01/21/2020
• Est. Priority Date: 05/14/2015
• Status: Active Grant

• Current Assignee: Deephaven Data Labs, LLC
• Original Assignee: Deephaven Data Labs, LLC
• Inventors: Kent, IV, David R., Caudy, Ryan, Wright, Charles, Dorfman, Nathaniel J., Teodorescu, Radu
• Primary Examiner(s): Yen, Syling
• Application Number:
  US16/036,187
• Publication Number:
  US 20180322162A1
• Time in Patent Office: 554 Days
• Field of Search: 707770, 709208, 715718
• CPC Class Codes: G06F 11/1451 by selection of backup contents
• CPC Class Codes: G06F 11/1464 for networked environments
• CPC Class Codes: G06F 11/1469 Backup restoration techniques
• CPC Class Codes: G06F 12/0261 using reference counting
• CPC Class Codes: G06F 12/084 with a shared cache
• CPC Class Codes: G06F 12/1483 using an access-table, e.g. matrix or list
• CPC Class Codes: G06F 15/17331 Distributed shared memory [DSM], e.g. remote direct memory access [RDMA]
• CPC Class Codes: G06F 16/113 Details of archiving lifecycle management in storage systems G06F3/0649; backup systems G06F11/1446
• CPC Class Codes: G06F 16/144 Query formulation
• CPC Class Codes: G06F 16/162 Delete operations erasing in storage systems G06F3/0652
• CPC Class Codes: G06F 16/215 Improving data quality; Data cleansing, e.g. de-duplication, removing invalid entries or correcting typographical errors
• CPC Class Codes: G06F 16/22 Indexing; Data structures therefor; Storage structures
• CPC Class Codes: G06F 16/221 Column-oriented storage; Management thereof
• CPC Class Codes: G06F 16/2228 Indexing structures
• CPC Class Codes: G06F 16/2237 Vectors, bitmaps or matrices
• CPC Class Codes: G06F 16/2246 Trees, e.g. B+trees
• CPC Class Codes: G06F 16/2255 Hash tables
• CPC Class Codes: G06F 16/2264 Multidimensional index structures
• CPC Class Codes: G06F 16/2272 Management thereof
• CPC Class Codes: G06F 16/2282 Tablespace storage structures; Management thereof
• CPC Class Codes: G06F 16/2291 : User-Defined Types; Storage management thereof
• CPC Class Codes: G06F 16/23 : Updating
• CPC Class Codes: G06F 16/2308 : Concurrency control transaction processing G06F9/466
• CPC Class Codes: G06F 16/2358 : Change logging, detection, and notification replication G06F16/27
• CPC Class Codes: G06F 16/2365 : Ensuring data consistency and integrity
• CPC Class Codes: G06F 16/2372 : Updates performed during offline database operations
• CPC Class Codes: G06F 16/2379 : Updates performed during online database operations; commit processing
• CPC Class Codes: G06F 16/242 : Query formulation
• CPC Class Codes: G06F 16/2428 : Query predicate definition using graphical user interfaces, including menus and forms G06F16/2423 takes precedence
• CPC Class Codes: G06F 16/245 : Query processing
• CPC Class Codes: G06F 16/2453 : Query optimisation
• CPC Class Codes: G06F 16/24534 : Query rewriting; Transformation
• CPC Class Codes: G06F 16/24535 : of sub-queries or views
• CPC Class Codes: G06F 16/24537 : of operators
• CPC Class Codes: G06F 16/24539 : using cached or materialised query results
• CPC Class Codes: G06F 16/2455 : Query execution
• CPC Class Codes: G06F 16/24553 : of query operations
• CPC Class Codes: G06F 16/2456 : Join operations
• CPC Class Codes: G06F 16/24561 : Intermediate data storage techniques for performance improvement
• CPC Class Codes: G06F 16/2457 : with adaptation to user needs
• CPC Class Codes: G06F 16/24575 : using context
• CPC Class Codes: G06F 16/248 : Presentation of query results
• CPC Class Codes: G06F 16/254 : Extract, transform and load [ETL] procedures, e.g. ETL data flows in data warehouses
• CPC Class Codes: G06F 16/27 : Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor
• CPC Class Codes: G06F 16/278 : Data partitioning, e.g. horizontal or vertical partitioning
• CPC Class Codes: G06F 16/285 : Clustering or classification
• CPC Class Codes: G06F 16/9024 : Graphs; Linked lists G06F16/9027 takes precedence
• CPC Class Codes: G06F 16/907 : Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
• CPC Class Codes: G06F 16/951 : Indexing; Web crawling techniques
• CPC Class Codes: G06F 16/9535 : Search customisation based on user profiles and personalisation
• CPC Class Codes: G06F 16/9538 : Presentation of query results
• CPC Class Codes: G06F 16/9566 : URL specific, e.g. using aliases, detecting broken or misspelled links
• CPC Class Codes: G06F 16/9574 : of access to content, e.g. by caching
• CPC Class Codes: G06F 17/40 : Data acquisition and logging for input to computer G06F3/00
• CPC Class Codes: G06F 21/00 : Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
• CPC Class Codes: G06F 21/6209 : to a single file or object, e.g. in a secure envelope, encrypted and accessed using a key, or with access control rules appended to the object itself
• CPC Class Codes: G06F 2201/805 : Real-time
• CPC Class Codes: G06F 2201/84 : Using snapshots, i.e. a logical point-in-time copy of the data
• CPC Class Codes: G06F 2212/1052 : Security improvement
• CPC Class Codes: G06F 2212/154 : Networked environment
• CPC Class Codes: G06F 2212/163 : Server or database system
• CPC Class Codes: G06F 2212/60 : Details of cache memory
• CPC Class Codes: G06F 3/0481 : based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance
• CPC Class Codes: G06F 3/0482 : Interaction with lists of selectable items, e.g. menus
• CPC Class Codes: G06F 3/0483 : Interaction with page-structured environments, e.g. book metaphor
• CPC Class Codes: G06F 3/04847 : Interaction techniques to control parameter settings, e.g. interaction with sliders or dials
• CPC Class Codes: G06F 3/0485 : Scrolling or panning
• CPC Class Codes: G06F 3/04895 : Guidance during keyboard input operation, e.g. prompting
• CPC Class Codes: G06F 3/0605 : by facilitating the interaction with a user or administrator
• CPC Class Codes: G06F 3/0656 : Data buffering arrangements
• CPC Class Codes: G06F 3/067 : Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
• CPC Class Codes: G06F 40/117 : Tagging; Marking up details of markup languages G06F40/143; Designating a block; Setting of attributes style sheets, e.g. eXtensible Stylesheet Language Transformation [XSLT], G06F40/154
• CPC Class Codes: G06F 40/134 : Hyperlinking
• CPC Class Codes: G06F 40/166 : Editing, e.g. inserting or deleting
• CPC Class Codes: G06F 40/174 : Form filling; Merging
• CPC Class Codes: G06F 40/177 : of tables; using ruled lines
• CPC Class Codes: G06F 40/18 : of spreadsheets form-filling G06F40/174
• CPC Class Codes: G06F 40/183 : Tabulation, i.e. one-dimensional positioning
• CPC Class Codes: G06F 40/216 : using statistical methods
• CPC Class Codes: G06F 40/274 : Converting codes to words; Guess-ahead of partial word inputs
• CPC Class Codes: G06F 8/30 : Creation or generation of source code
• CPC Class Codes: G06F 8/41 : Compilation
• CPC Class Codes: G06F 8/427 : Parsing
• CPC Class Codes: G06F 8/60 : Software deployment
• CPC Class Codes: G06Q 40/04 : Trading; Exchange, e.g. stocks, commodities, derivatives or currency exchange
• CPC Class Codes: H04L 12/18 : for broadcast or conference , e.g. multicast
• CPC Class Codes: H04L 51/046 : Interoperability with other network applications or services
• CPC Class Codes: H04L 51/212 : using filtering or selective blocking
• CPC Class Codes: H04L 61/5069 : for group communication, multicast communication or broadcast communication
• CPC Class Codes: H04L 63/101 : Access control lists [ACL]
• CPC Class Codes: H04L 63/102 : Entity profiles
• CPC Class Codes: H04L 67/01 : Protocols
• CPC Class Codes: H04L 67/1001 : for accessing one among a plurality of replicated servers
• CPC Class Codes: H04L 67/141 : Setup of application sessions admission control or resource allocation in data switching networks H04L47/70
• CPC Class Codes: H04L 67/34 : involving the movement of software or configuration parameters network booting or remote initial program loading [RIPL] G06F9/4416
• CPC Class Codes: H04L 67/56 : Provisioning of proxy services store-and-forward switching systems in data switching networks H04L12/54
• CPC Class Codes: H04L 67/566 : Grouping or aggregating service requests, e.g. for unified processing
• CPC Class Codes: H04L 67/568 : Storing data temporarily at an intermediate stage, e.g. caching
• CPC Class Codes: H04L 67/5681 : Pre-fetching or pre-delivering data based on network characteristics
• CPC Class Codes: H04L 69/16 : Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]

Abstract

Described are methods, systems and computer readable media for providing a query dispatch and execution architecture.

Claims

1. A computer data system having a query dispatch and execution architecture, the system comprising:

one or more processors;

computer readable storage coupled to the one or more processors, the computer readable storage having stored thereon instructions that, when executed by the one or more processors, cause the one or more processors to perform operations including;

sending a request for a remote query processor from a client computer to a remote query dispatcher executing on a query server computer, wherein the request includes parameters for one or more of configuring the remote query processor or an operating environment for the remote query processor;

attempting, at the remote query dispatcher, to allocate the operating environment for the remote query processor and to start execution of the remote query processor on the query server computer;

when the remote query processor is started, performing operations including;

providing one of zero or more client classes to the remote query processor;

registering the remote query processor with the remote query dispatcher;

providing the client computer with an address assignment of one of the remote query processor or a proxy machine;

connecting from the client computer to the remote query processor;

transmitting a database query from the client computer to the remote query processor, the database query referencing a table in a database; and

receiving at the client computer a response to the database query from the remote query processor, wherein processing of the database query is executed partly by the client computer and partly by the remote query processor;

receiving, at the remote query dispatcher, a second request for a second remote query processor, wherein the second request includes second parameters for configuring the second remote query processor and a second operating environment for the second remote query processor, the second parameters including one or more of one or more override classes or one or more alternative classpaths;

attempting, at the remote query dispatcher, to allocate the second operating environment for the second remote query processor and to start execution of the second remote query processor on the query server computer, the remote query dispatcher specifying one or more of the one or more override classes or the one or more alternative classpaths to be used when starting the second remote query processor such that the second remote query processor runs a different code version than that run by the remote query processor.

2. The system of claim 1, wherein the client computer is another remote query processor.

3. The system of claim 1, wherein the zero or more client classes comprise one or more client classes, and the one or more client classes contain Java bytecode and the remote query processor includes a Java Virtual Machine instance.

4. The system of claim 1, wherein the operations further include:

determining whether the remote query dispatcher rejects the request for the remote query processor from the client computer; and

when the remote query dispatcher rejects the request, providing an indication of the rejection to the client computer.

5. The system of claim 1, wherein the operations further include:

determining whether the attempting to start the remote query processor was successful; and

when the attempting was not successful, repeating the attempting a limited number of times.

6. The system of claim 1, wherein the operations further include periodically providing a liveness indication from the remote query processor to the remote query dispatcher.

7. The system of claim 1, wherein each of the remote query dispatcher and the remote query processor monitors a liveness indication from each of other connected components.

8. The system of claim 1, wherein the requested parameters include a maximum amount of memory of the query server computer to be used by the remote query processor.

9. A method for improving performance of a computer data system through control of a query dispatch and execution architecture, the method comprising:

sending a request for a remote query processor from a client computer to a remote query dispatcher executing on a query server computer, wherein the request includes parameters for configuring the remote query processor;

attempting, at the remote query dispatcher, to allocate an operating environment for the remote query processor and to start execution of the remote query processor on the query server computer;

when the remote query processor is started, performing operations including;

providing one of zero or more client classes to the remote query processor;

transmitting a database query to the remote query processor, the database query referencing a table in a database; and

receiving a response to the database query from the remote query processor, wherein the remote query processor is configured to stream the response to a predetermined location;

receiving, at the remote query dispatcher, a second request for a second remote query processor, wherein the second request includes second parameters for configuring the second remote query processor, the second parameters including one or more of one or more override classes or one or more alternative classpaths; and

attempting, at the remote query dispatcher, to allocate a second operating environment for the second remote query processor, the remote query dispatcher specifying one or more of the one or more override classes or the one or more alternative classpaths to be used when starting the second remote query processor.

10. The method of claim 9 wherein the transmitting and the receiving are repeated.

11. The method of claim 9, wherein the zero or more client classes comprise one or more client classes, and the one or more client classes contain bytecode and the remote query processor includes a virtual machine instance.

12. The method of claim 9, further comprising:

determining whether the remote query dispatcher rejects the request for the remote query processor from the client computer; and

when the remote query dispatcher rejects the request, providing an indication of the rejection to the client computer.

13. The method of claim 9, further comprising:

determining whether the attempting to start the remote query processor was successful; and

when the attempting was not successful, repeating the attempting a limited number of times.

14. The method of claim 9, further comprising periodically providing a liveness indication from the remote query processor to the remote query dispatcher.

15. The method of claim 9, wherein each of the remote query dispatcher and the remote query processor monitors a liveness indication from each of other connected components.

16. The method of claim 9, wherein the requested parameters include a maximum amount of memory of the query server computer to be used by the remote query processor.

17. The method of claim 9, wherein the requested parameters include an environment variable to be set on the remote query processor.

18. A nontransitory computer readable medium having stored thereon software instructions that, when executed by one or more processors, cause the processors to perform operations including:

attempting, at a remote query dispatcher, to allocate an operating environment for a remote query processor and to start execution of a remote query processor on a query server computer;

when the remote query processor is started, performing operations including;

providing one of zero or more client classes to the remote query processor;

transmitting a database query to the remote query processor, the database query referencing a table in a database; and

receiving a response to the database query from the remote query processor, wherein the database query runs as a privileged user to access confidential data not visible to the client computer;

receiving, at the remote query dispatcher, a second request for a second remote query processor, wherein the second request includes one or more of one or more override classes or one or more alternative classpaths; and

attempting, at the remote query dispatcher, to allocate a second operating environment for the second remote query processor, the remote query dispatcher specifying one or more of the one or more override classes or the one or more alternative classpaths to be used when starting the second remote query processor such that the second remote query processor runs a different code version than that run by the remote query processor.

19. The nontransitory computer readable medium of claim 18, wherein the transmitting and the receiving are repeated.

20. The nontransitory computer readable medium of claim 18, wherein the zero or more client classes comprise one or more client classes, and the one or more client classes contain bytecode and the remote query processor includes a virtual machine instance.

21. The nontransitory computer readable medium of claim 18, wherein the operations further include:

determining whether the remote query dispatcher rejects the request for the remote query processor from the client computer; and

when the remote query dispatcher rejects the request, providing an indication of the rejection to the client computer.

22. The nontransitory computer readable medium of claim 18, wherein the operations further include:

determining whether the attempting to start the remote query processor was successful; and

when the attempting was not successful, repeating the attempting a limited number of times.

23. The nontransitory computer readable medium of claim 18, wherein the operations further include periodically providing a liveness indication from the remote query processor to the remote query dispatcher.

24. The nontransitory computer readable medium of claim 18, wherein the requested parameters include an environment variable to be set on the remote query processor.