公开(公告)号：US20190102416A1

公开(公告)日：2019-04-04

申请号：US15721317

申请日：2017-09-29

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Huanchen Zhang ,  Kimberly Keeton

IPC: G06F17/30 ,  G06F3/06

CPC classification number: G06F16/2343 ,  G06F3/0619 ,  G06F3/0622 ,  G06F3/0637 ,  G06F3/067 ,  G06F9/52 ,  G06F9/522 ,  G06F9/524 ,  G06F9/526 ,  G06F13/1663 ,  G06F16/2365 ,  G06F16/2379

Abstract: A system includes processing nodes and shared memory. Each processing node includes a processor and local memory. The local memory of each processing node stores at least a partial copy of the immutable data stage of a dataset. The shared memory is accessible by each processing node and stores a sole copy of the mutable data stage of the dataset and a master copy of the immutable data stage of a dataset.

公开(公告)号：US10417215B2

公开(公告)日：2019-09-17

申请号：US15721317

申请日：2017-09-29

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Huanchen Zhang ,  Kimberly Keeton

IPC: G06F12/00 ,  G06F16/23 ,  G06F3/06 ,  G06F9/52 ,  G06F13/16

Abstract: A system includes processing nodes and shared memory. Each processing node includes a processor and local memory. The local memory of each processing node stores at least a partial copy of the immutable data stage of a dataset. The shared memory is accessible by each processing node and stores a sole copy of the mutable data stage of the dataset and a master copy of the immutable data stage of a dataset.

公开(公告)号：US20180322158A1

公开(公告)日：2018-11-08

申请号：US15585153

申请日：2017-05-02

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Huanchen Zhang ,  Kimberly Keeton

IPC: G06F17/30

CPC classification number: G06F17/30362 ,  G06F17/30353 ,  G06F17/30356

Abstract: Example implementations relate to changing concurrency control modes. An example implementation includes controlling a concurrency control mode of a data slot that stores a data value. A concurrency control mode of a data slot may be changed from an optimistic concurrency control mode to a multi-version concurrency control mode responsive to detecting a read-write conflict for the data slot. A concurrency control mode of a data slot may be changed from a multi-version concurrency control mode to an optimistic concurrency control mode responsive to detecting that the data slot satisfies a low contention criterion.