CA2273523A1 - Method and apparatus for providing failure detection and recovery with predetermined replication style for distributed applications in a network - Google Patents

Method and apparatus for providing failure detection and recovery with predetermined replication style for distributed applications in a network Download PDF

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Publication number
CA2273523A1
CA2273523A1 CA002273523A CA2273523A CA2273523A1 CA 2273523 A1 CA2273523 A1 CA 2273523A1 CA 002273523 A CA002273523 A CA 002273523A CA 2273523 A CA2273523 A CA 2273523A CA 2273523 A1 CA2273523 A1 CA 2273523A1
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Canada
Prior art keywords
replication
registered
host computer
application module
running
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Granted
Application number
CA002273523A
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French (fr)
Other versions
CA2273523C (en
Inventor
Pi-Yu Chung
Yennun Huang
Deron Liang
Chia-Yen Shih
Shalini Yajnik
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Academia Sinica
Nokia of America Corp
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Individual
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Publication of CA2273523A1 publication Critical patent/CA2273523A1/en
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Publication of CA2273523C publication Critical patent/CA2273523C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/30—Monitoring
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/2097—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements maintaining the standby controller/processing unit updated
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G06F11/1402—Saving, restoring, recovering or retrying
    • G06F11/1415—Saving, restoring, recovering or retrying at system level
    • G06F11/1438—Restarting or rejuvenating
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/202—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
    • G06F11/2023—Failover techniques
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0751—Error or fault detection not based on redundancy
    • G06F11/0754—Error or fault detection not based on redundancy by exceeding limits
    • G06F11/0757—Error or fault detection not based on redundancy by exceeding limits by exceeding a time limit, i.e. time-out, e.g. watchdogs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/202—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
    • G06F11/2038—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant with a single idle spare processing component

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Hardware Redundancy (AREA)
  • Multi Processors (AREA)

Abstract

An application module (A) running on a host computer in a computer network is failure-protected with one or more backup copies that are operative on other host computers in the network. In order to effect fault protection, the application module registers itself with a ReplicaManager daemon process (112) by sending a registration message, which message, in addition to identifying the registering application module and the host computer on which it is running, includes the particular replication strategy (cold backup, warm backup, or hot backup) and the degree of replication associated with that application module. The backup copies are then maintained in a fail-over state according to the registered replication strategy. A WatchDog daemon (113), running on the same host computer as the registered application periodically monitors the registered application to detect failures. When a failure, such as a crash or hangup of the application module, is detected, the failure is reported to the ReplicaManager, which effects the requested fail-over actions. An additional backup copy is then made operative in accordance with the registered replication style and the registered degree of replication. A
SuperWatchDog daemon process (115-1), running on the same host computer as the ReplicaManager, monitors each host computer in the computer network. When a host failure is detected, each application module running on that host computer is individually failure-protected in accordance with its registered replication style and degree of replication.
CA002273523A 1998-07-20 1999-06-03 Method and apparatus for providing failure detection and recovery with predetermined replication style for distributed applications in a network Expired - Fee Related CA2273523C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/119,139 US6266781B1 (en) 1998-07-20 1998-07-20 Method and apparatus for providing failure detection and recovery with predetermined replication style for distributed applications in a network
US09/119,139 1998-07-20

Publications (2)

Publication Number Publication Date
CA2273523A1 true CA2273523A1 (en) 2000-01-20
CA2273523C CA2273523C (en) 2003-03-18

Family

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CA002273523A Expired - Fee Related CA2273523C (en) 1998-07-20 1999-06-03 Method and apparatus for providing failure detection and recovery with predetermined replication style for distributed applications in a network

Country Status (7)

Country Link
US (1) US6266781B1 (en)
EP (1) EP0974903B1 (en)
JP (1) JP2000105754A (en)
KR (1) KR20000011835A (en)
AU (1) AU752844B2 (en)
CA (1) CA2273523C (en)
DE (1) DE69907818T2 (en)

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Publication number Publication date
JP2000105754A (en) 2000-04-11
EP0974903B1 (en) 2003-05-14
KR20000011835A (en) 2000-02-25
EP0974903A2 (en) 2000-01-26
DE69907818D1 (en) 2003-06-18
EP0974903A3 (en) 2001-06-13
CA2273523C (en) 2003-03-18
US6266781B1 (en) 2001-07-24
AU752844B2 (en) 2002-10-03
AU4020299A (en) 2000-02-10
DE69907818T2 (en) 2004-03-04

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