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System-for-group-leader-recovery-in-a-distributed-computing-environment

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System for group leader recovery in a distributed computing environment

Details

Inventors: Badovinatz, Peter Richard; Chandra, Tushar Deepak; Kirby, Orvalle Theodore; Pershing, Jr., John Arthur;
Assignee: International Business Machines Corporation (Armonk, NY)
Primary Examiner: Treat; William M.
Assistant Examiner:
Attorney, Agent or Firm: Gonzalez; Floyd A.

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.

DETAILED DESCRIPTION The shortcomings of the prior art are overcome and additional advantages are provided through the provision of a recovery mechanism for a failed group leader of a group of processors of a distributed computing environment.
A new group leader is selected from a membership list ordered in sequence of joins of processors to the group of processors.
The new group leader is the next processor in the membership list after the failed group leader.
In one embodiment of the invention, the group of processors is informed of the new group leader.
In a further embodiment of the invention, the new group leader is obtained from a name server, which selects the new group leader from the membership list.
The group leader recovery mechanism of the present invention provides a flexible technique for determining a new group leader, when the current group leader fails.
It ensures that the members of the group are aware of the new group leader and can count on the group leader to control and manage the group.
Additional features and advantages are realized through the techniques of the present invention.
Other embodiments and aspects of the invention are described in detail herein and are considered a part of the claimed invention.

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