Patent US5704032A successfully refreshed from Google Patents.
US5704032A
Expired / Lapsed
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Method for group leader recovery in a distributed computing environment
Assignee: GlobalFoundries Inc
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Filing: 1996-04-30
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Granted: 1997-12-30
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Expires: 2016-04-30
Abstract
Abstract A new leader of a group of processors executing within a distributed computing environment is selected when the current group leader fails. The new group leader is selected from a membership list ordered in sequence of joins of processors to the group of processors. The selected leader is the next processor on the membership list after the failed group leader. In particular, it is the next active processor on the membership list. The group of processors is informed of the new group leader, after it is selected.
Inventors
- 👤 Peter Richard Badovinatz
- 👤 Tushar Deepak Chandra
- 👤 Orvalle Theodore Kirby
- 👤 John Arthur Pershing, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:35
CPC Classifications
G; G06; G06F; G06F9/00; G06F9/06; G06F9/46; G06F9/50; G06F9/5061; G06F2209/00; G06F2209/50; G06F2209/505
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
61 words
A method for recovering from a failed group leader of a group of processors of a distributed computing environment, said method comprising: obtaining from a membership list ordered in sequence of joins of processors to said group of processors a next processor in said membership list; and selecting said next processor as a new group leader of said group of processors.
Claim 2
Independent Claim
61 words
A method for recovering from a failed group leader of a group of processors of a distributed computing environment, said method comprising: obtaining from a membership list ordered in sequence of joins of processors to said group of processors a next processor in said membership list; and selecting said next processor as a new group leader of said group of processors.
Claim 3
Dependent Claim
18 words
The method of claim 1, wherein said obtaining comprises obtaining a next active processor from said membership list.
Claim 4
Dependent Claim
17 words
The method of claim 1, further comprising informing said group of processors of said new group leader.
Claim 5
Dependent Claim
30 words
The method of claim 1, further comprising requesting appointment of said new group leader from a name server, said name server selecting said new group leader from said membership list.
Claim 6
Dependent Claim
19 words
The method of claim 1, wherein said membership list is located at each processor of said group of processors.
Claim 7
Dependent Claim
41 words
The method of claim 5, wherein said obtaining comprises obtaining, by a processor of said group of processors, said new group leader from said membership list at said processor, and further comprising informing a name server of said new group leader.
Claim 8
Dependent Claim
21 words
The method of claim 6, further comprising informing, by said name server, said group of processors of said new group leader.
Claim 9
Dependent Claim
35 words
The method of claim 1, further comprising receiving, by said new group leader, prior to said new group leader being selected as said new group leader, any messages previously sent to said group of processors.
Claim 10
Dependent Claim
24 words
The method of claim 8, further comprising providing, by said new group leader, any messages missed by any processor of said group of processors.
Claim 11
Dependent Claim
14 words
The method of claim 1, further comprising sending requests to said new group leader.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-12-29 | 2001-06-30 | 2001-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-12-29 | 2005-06-30 | 2005-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-12-29 | 2009-06-30 | 2009-12-30 | $7700.00 | Window Closed / Lapsed |