Mostafa Elhemali

US Patent:

20110167056, Jul 7, 2011

Filed:

Jan 4, 2010

Appl. No.:

12/651634

Inventors:

Nimish S. Khanolkar - Bellevue WA, US
Pawel Terlecki - Bellevue WA, US
Cesar A. Galindo-Legaria - Redmond WA, US
Yavor V. Angelov - Redmond WA, US
Mostafa Elhemali - Seattle WA, US
Pooja N. Darera - Redmond WA, US

Assignee:

MICROSOFT CORPORATION - Redmond WA

International Classification:

G06F 17/30

US Classification:

707718, 707E17014

Abstract:

A query configured according to a query template is received. The query includes values for a plurality of parameters. A key is generated for the query that indicates a selectivity region in a selectivity space determined for the included parameter values. Whether the generated key matches any key of a plurality of keys is determined. Each key of the plurality of keys is associated with a corresponding query plan. If the generated key is determined to not match any of the keys, the query is compiled to generate a new query plan, and the generated query plan is executed with respect to the query. If the key is determined to match any key of the plurality of keys, a query plan associated with the matched key is selected, and the query plan associated with the matched key is executed with respect to the query.

US Patent:

20170134526, May 11, 2017

Filed:

Jan 20, 2017

Appl. No.:

15/411641

Inventors:

- Redmond WA, US
Carlo Curino - San Jose CA, US
Kannababu Karanam - Sammamish WA, US
Subramaniam Venkatraman Krishnan - Redmond WA, US
Christopher William Douglas - Mountain View WA, US
Sriram Rao - San Jose CA, US
Mostafa Elhemali - Seattle WA, US
Chuan Liu - Seattle WA, US

International Classification:

H04L 29/08

Abstract:

Embodiments are directed to progressively migrating source computer nodes where the source computer nodes perform a computer-implemented service. In one embodiment, a computer system determines that execution of the performed service is to be migrated from the source computer nodes to target computer nodes. The computer system groups the source computer nodes into multiple source subgroups, where each source subgroup includes at least one source computer node. The computer system then schedules creation of target subgroups of target nodes. These target subgroups include at least one source computer node and, themselves, correspond to a source subgroup. The computer system activates a first target subgroup corresponding to a first source subgroup, and deactivates the first source subgroup. In this manner, the first target subgroup replaces the first source subgroup. Still further, the target subgroups are scheduled to be created only after the first source subgroup has been deactivated.

US Patent:

20150188989, Jul 2, 2015

Filed:

Dec 30, 2013

Appl. No.:

14/143797

Inventors:

- Redmond WA, US
Carlo Curino - San Jose CA, US
Kannababu Karanam - Sammamish WA, US
Subramaniam Venkatraman Krishnan - Redmond WA, US
Christopher William Douglas - Mountain View CA, US
Sriram Rao - San Jose CA, US
Mostafa Elhemali - Seattle WA, US
Chuan Liu - Seattle WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

H04L 29/08

Abstract:

Embodiments are directed to progressively migrating source computer nodes where the source computer nodes perform a computer-implemented service. In one embodiment, a computer system determines that execution of the performed service is to be migrated from the source computer nodes to target computer nodes. The computer system groups the source computer nodes into multiple source subgroups, where each source subgroup includes at least one source computer node. The computer system then schedules creation of target subgroups of target nodes. These target subgroups include at least one source computer node and, themselves, correspond to a source subgroup. The computer system activates a first target subgroup corresponding to a first source subgroup, and deactivates the first source subgroup. In this manner, the first target subgroup replaces the first source subgroup. Still further, the target subgroups are scheduled to be created only after the first source subgroup has been deactivated.

US Patent:

20150032723, Jan 29, 2015

Filed:

Oct 14, 2014

Appl. No.:

14/514259

Inventors:

- Redmond WA, US
Pawel Terlecki - Bellevue WA, US
Cesar A. Galindo-Legaria - Redmond WA, US
Yavor V. Angelov - Redmond WA, US
Mostafa Elhemali - Seattle WA, US
Pooja N. Darera - Redmond WA, US

International Classification:

G06F 17/30

US Classification:

707718

Abstract:

A query is received. The query comprises a plural number of efficiency expressions. A key is generated for the query indicating a first selectivity region in multi-dimensional selectivity space comprising an array of selectivity regions arranged according to a grid with a number of dimensions equal to the plural number. The generated key is used to look up a stored query plan among a plurality of stored query plans. A stored query plan is executed for the query that is associated with a stored key determined to match the generated key.