Hi,

The "vector of timestamps" alg. is one that can determine the order of
causal depending events. And I think it is enough for debugging. When
debugging, u don't mind about events tha are not related to each other. What
u want to know is if a set of events on each node by a global time is
consistent.

Basicly, u can use a VT (vector timestamp) layer on your system messages and
an "distributed snapshot" for determining a global state.

.- Chow/Johnson: sections 9.2-9.4
.- Colouris/Dollimore/Kindberg: sections 10.4-10.7
.- Yang/Marsland (Eds): Global States and Time in Distributed Systems, IEEE
Computer Society Press . Chase/ Garg: Detection of Global Predicates:
techniques and their Limitation, Distributed Computing, Vol 11(4), 1998


[]s,
FR.


  -----Original Message-----
  From: A mailing list for Enterprise JavaBeans development on behalf of
Juan Pablo Lorandi
  Sent: Thu 8/8/2002 12:30 PM
  To: [EMAIL PROTECTED]
  Cc:
  Subject: Re: Distributed Logging


  If you're using log4j, alternatively, you can start a SocketNode on a PC
  on the network. It will listen to LoggingEvent from all the machines you
  wish and dump into a file. It will be less expensive on network
  resources than JMS and it's easier to setup. On the other hand, I think
  it's less likely that logging events will be lost with JMS.

  My 2c,

  Juan Pablo Lorandi
  Chief Software Architect
  Code Foundry Ltd.
  [EMAIL PROTECTED]

  Barberstown, Straffan, Co. Kildare, Ireland.
  Tel: +353-1-6012050  Fax: +353-1-6012051
  Mobile: +353-86-2157900
  www.codefoundry.com


  > -----Original Message-----
  > From: A mailing list for Enterprise JavaBeans development
  > [mailto:[EMAIL PROTECTED]] On Behalf Of Jay Wagner
  > Sent: Thursday, August 08, 2002 2:17 PM
  > To: [EMAIL PROTECTED]
  > Subject: Re: Distributed Logging
  >
  >
  > Vikram,
  >
  > If I assume you are using log4j or something such as that,
  > you can implement the logging using JMS providing a
  > JMSAppender which you can have various parties subscribe to
  > the logging topics.
  >
  > Jay Wagner
  > Sybase Inc.
  >
  > ----- Original Message -----
  > From: "Vikram Naik" <[EMAIL PROTECTED]>
  > To: <[EMAIL PROTECTED]>
  > Sent: Thursday, August 08, 2002 1:03 AM
  > Subject: Distributed Logging
  >
  >
  > > Hello All,
  > >
  > >         We have a requirement for distributed logging. i.e.  though
  > > the
  > business
  > > entities are deployed at different locations the log file should be
  > > generated at one place. Is that possible???
  > >
  > > TIA
  > > Vikram Naik
  > >
  > >
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