WO2010104902A3 - Composite hash and list partitioning of database tables - Google Patents

Composite hash and list partitioning of database tables Download PDF

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Publication number
WO2010104902A3
WO2010104902A3 PCT/US2010/026746 US2010026746W WO2010104902A3 WO 2010104902 A3 WO2010104902 A3 WO 2010104902A3 US 2010026746 W US2010026746 W US 2010026746W WO 2010104902 A3 WO2010104902 A3 WO 2010104902A3
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WO
WIPO (PCT)
Prior art keywords
partitioning
data
data elements
node
partition
Prior art date
Application number
PCT/US2010/026746
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French (fr)
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WO2010104902A2 (en
Inventor
Jonas Oreland
Frazer Clement
Tomas Ulin
Original Assignee
Oracle International Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oracle International Corporation filed Critical Oracle International Corporation
Priority to CN201080011589.5A priority Critical patent/CN102395962B/en
Priority to EP10751317.8A priority patent/EP2406736A4/en
Publication of WO2010104902A2 publication Critical patent/WO2010104902A2/en
Publication of WO2010104902A3 publication Critical patent/WO2010104902A3/en

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/22—Indexing; Data structures therefor; Storage structures
    • G06F16/2228—Indexing structures
    • G06F16/2255—Hash tables
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/22—Indexing; Data structures therefor; Storage structures
    • G06F16/2228—Indexing structures
    • G06F16/2272—Management thereof

Abstract

A method for partitioning during an online node add. The method includes providing a data storage cluster (110) with first and second nodes (114, 116), and storing a table (204) of data in the data storage cluster (110) with a first partition (222) storing a set of rows or data elements in the first node and a second partition (320) storing a set of rows or data elements in the second node. The method includes adding a third node (118) to the cluster and adding a third partition to the table using a partitioning mechanism (140, 234) to create a distribution mapping (152) for data elements in the first, second, and third partitions. The distribution mapping (152) provides substantially uniform distribution of the data elements over the first, second, and third partitions by the partitioning mechanism (140, 234) using modulo hash partitioning as a function of data elements or by combining hash and list partitioning (144, 148) such that data is retained on the original partitions.
PCT/US2010/026746 2009-03-11 2010-03-10 Composite hash and list partitioning of database tables WO2010104902A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201080011589.5A CN102395962B (en) 2009-03-11 2010-03-10 Composite hash and list partitioning of database tables
EP10751317.8A EP2406736A4 (en) 2009-03-11 2010-03-10 Composite hash and list partitioning of database tables

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/402,024 2009-03-11
US12/402,024 US8078825B2 (en) 2009-03-11 2009-03-11 Composite hash and list partitioning of database tables

Publications (2)

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WO2010104902A2 WO2010104902A2 (en) 2010-09-16
WO2010104902A3 true WO2010104902A3 (en) 2011-01-06

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PCT/US2010/026746 WO2010104902A2 (en) 2009-03-11 2010-03-10 Composite hash and list partitioning of database tables

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US (1) US8078825B2 (en)
EP (1) EP2406736A4 (en)
CN (1) CN102395962B (en)
WO (1) WO2010104902A2 (en)

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CN102395962A (en) 2012-03-28
WO2010104902A2 (en) 2010-09-16
EP2406736A4 (en) 2014-04-02
EP2406736A2 (en) 2012-01-18
US20100235606A1 (en) 2010-09-16
US8078825B2 (en) 2011-12-13
CN102395962B (en) 2014-04-30

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