Fetching scheduler list

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Contents 1 General 2 Version Information 3 Example Log(s) 3.1 Master Page Download Succeeded 3.1.1 Line-By-Line Explanation 3.2 Too Many Backoffs - Fetching Master File 3.2.1 Line-By-Line Explanation 4 Other Related Messages 5 Developer Information

[edit] General

Message Type: Information Message

This Message means that the BOINC Client Software is trying to obtain the Project's Scheduler List from the Project's Web Site by addressing the Project's Master URL. Once the Web Page has been fetched, the contents of this page will be scanned for the URLs that point to the Project's Schedulers.

The reason for this two step isolation is that it grants the projects the freedom to move, add, delete, modify, or otherwise change the number of and location of the Schedulers without having to notify all of the Participants.

[edit] Version Information

• Fetching master file
• Fetching master page

[edit] Example Log(s)

[edit] Master Page Download Succeeded

2005-06-26 23:46:45 [resourcemeasurement] Fetching master file
2005-06-26 23:46:47 [resourcemeasurement] Master page download succeeded

Line-By-Line Explanation

• Fetching master file

We are going to use the Project's Master URL to fetch the Master File which will have address (URL) information embedded within that will allow us to contact the Project's Schedulers.

• Master page download succeeded

And we were successful in obtaining the Master Page.

[edit] Too Many Backoffs - Fetching Master File

2005-06-26 23:46:03 [Pirates@Home] Fetching master file
2005-06-26 23:46:04 [Pirates@Home] Master file parse failed
2005-06-26 23:46:04 [Pirates@Home] Too many backoffs - fetching master file
2005-06-26 23:46:05 [Pirates@Home] Deferring communication with project for 2 days, 16 hours,
                                   17 minutes, and 48 seconds

Line-By-Line Explanation

• Fetching master file

We are going to do a Scheduler RPC to obtain the Master File from the Project's Web Site.

• Master file parse failed

The Master File failed to parse for one or more reasons.

• Too many backoffs - fetching master file

Because of the number of times we tried to work with the Master Page exceeds the error bounds, we will obtain a fresh copy after the time required for the Exponential Back-Off has expired.

• Deferring communication with project for "x" hours, "y" minutes, and "z" seconds

And now we wait for a brief span of time, I mean, heck, it is only 2 days ...

[edit] Other Related Messages

• Can't open master file
• Couldn't read master page for '(project identifier)': error '(error-code)'
• Couldn't start download of scheduler list: '(error-text)'
  • Obsolete: Couldn't start master page download: '(error-code)'
  • Obsolete: Couldn't start master page download: '(error-text)'
• Fetching scheduler list
  • Obsolete: Fetching master file
  • Obsolete: Fetching master page
• Scheduler list fetch failed
  • Obsolete: Master file fetch failed
  • Obsolete: Master page fetch failed
• Master file parse failed
• Master page download succeeded
• Master page has no schedulers
• Scheduler op: init_master_fetch failed.
• Too many backoffs - fetching master file

[edit] Developer Information

Code Location:	boinc/client/scheduler_op.C
Function:	SCHEDULER_OP::check_master_fetch_start()
Documentation:	boinc/client/scheduler_op.C
CVS Extract:	cvs -d :pserver:anonymous:@alien.ssl.berkeley.edu:/home/cvs/cvsroot checkout boinc/client/scheduler_op.C