[Backgroundrb-devel] [BUG] worker stopping abruptly

hemant gethemant at gmail.com
Wed Apr 18 10:59:26 EDT 2007


I have been facing this damn ugly issue since quite sometime.

So this worker reads RSS feed from Yahoo news and stores it in a DB.
The worker is scheduled to run at every 40 minutes and my
background_schedules.yml looks like this:

feed_worker:
  :class: :feed_worker
  :job_key: :feed_worker_key
  :worker_method: :do_work
  :trigger_args:
    :start: <%= Time.now + 5 %>
    :repeat_interval: <%= 40*60 %>

So story is, worker stops working suddenly. no exception thrown either
in background.log or background_server.log.

To also, to make sure that backgroundrb threads doesn't eat my
excpetion my code looks like this:

def do_work(args)
  begin
    logger.info "Starting the Yahoo feed worker on : #{Time.now}"
    yahoo_url = "http://finance.yahoo.com/rss/headline?s="
    symbol_list = NasdaqSymbols.find_all()

    symbol_list.each do|sym|
      temp_sym = sym.symbol.strip
      temp_url = yahoo_url + temp_sym
      get_feeds(temp_url,temp_sym) rescue next
    end
  rescue
    logger.info $!
    logger.info $!.backtrace
  end
end

^^^ could be naive, but the point is, why worker stops suddenly
without any errors? Earlier I thought, may be logging has bug and
worker is still running. But a quick check from database says
otherwise.

Following a full text of backgroundrb.log file:


20070417-15:51:01 (22525) ***** Starting the Yahoo feed worker on Time
: Tue Apr 17 15:51:01 +0530 2007
20070417-16:31:01 (22525) ***** Starting the Yahoo feed worker on Time
: Tue Apr 17 16:31:01 +0530 2007
20070417-17:11:01 (22525) ***** Starting the Yahoo feed worker on Time
: Tue Apr 17 17:11:01 +0530 2007
20070417-17:51:01 (22525) ***** Starting the Yahoo feed worker on Time
: Tue Apr 17 17:51:01 +0530 2007
20070417-18:31:01 (22525) ***** Starting the Yahoo feed worker on Time
: Tue Apr 17 18:31:01 +0530 2007
20070417-19:11:01 (22525) ***** Starting the Yahoo feed worker on Time
: Tue Apr 17 19:11:01 +0530 2007
20070417-19:51:01 (22525) ***** Starting the Yahoo feed worker on Time
: Tue Apr 17 19:51:01 +0530 2007
20070417-20:31:01 (22525) ***** Starting the Yahoo feed worker on Time
: Tue Apr 17 20:31:01 +0530 2007
20070417-21:11:01 (22525) ***** Starting the Yahoo feed worker on Time
: Tue Apr 17 21:11:01 +0530 2007
20070417-21:51:01 (22525) ***** Starting the Yahoo feed worker on Time
: Tue Apr 17 21:51:01 +0530 2007
20070417-22:31:01 (22525) ***** Starting the Yahoo feed worker on Time
: Tue Apr 17 22:31:01 +0530 2007
20070417-23:11:01 (22525) ***** Starting the Yahoo feed worker on Time
: Tue Apr 17 23:11:01 +0530 2007
20070417-23:51:01 (22525) ***** Starting the Yahoo feed worker on Time
: Tue Apr 17 23:51:01 +0530 2007
20070418-00:31:01 (22525) ***** Starting the Yahoo feed worker on Time
: Wed Apr 18 00:31:01 +0530 2007
20070418-01:11:01 (22525) ***** Starting the Yahoo feed worker on Time
: Wed Apr 18 01:11:01 +0530 2007
20070418-01:51:01 (22525) ***** Starting the Yahoo feed worker on Time
: Wed Apr 18 01:51:01 +0530 2007
20070418-02:31:01 (22525) ***** Starting the Yahoo feed worker on Time
: Wed Apr 18 02:31:01 +0530 2007
20070418-03:11:01 (22525) ***** Starting the Yahoo feed worker on Time
: Wed Apr 18 03:11:01 +0530 2007
20070418-03:51:01 (22525) ***** Starting the Yahoo feed worker on Time
: Wed Apr 18 03:51:01 +0530 2007
20070418-04:31:01 (22525) ***** Starting the Yahoo feed worker on Time
: Wed Apr 18 04:31:01 +0530 2007
20070418-05:11:01 (22525) ***** Starting the Yahoo feed worker on Time
: Wed Apr 18 05:11:01 +0530 2007
20070418-05:51:01 (22525) ***** Starting the Yahoo feed worker on Time
: Wed Apr 18 05:51:01 +0530 2007
20070418-06:31:01 (22525) ***** Starting the Yahoo feed worker on Time
: Wed Apr 18 06:31:01 +0530 2007
20070418-07:11:01 (22525) ***** Starting the Yahoo feed worker on Time
: Wed Apr 18 07:11:01 +0530 2007
20070418-07:51:01 (22525) ***** Starting the Yahoo feed worker on Time
: Wed Apr 18 07:51:01 +0530 2007
20070418-08:31:01 (22525) ***** Starting the Yahoo feed worker on Time
: Wed Apr 18 08:31:01 +0530 2007
20070418-09:11:01 (22525) ***** Starting the Yahoo feed worker on Time
: Wed Apr 18 09:11:01 +0530 2007
20070418-09:51:01 (22525) ***** Starting the Yahoo feed worker on Time
: Wed Apr 18 09:51:01 +0530 2007
20070418-10:31:01 (22525) ***** Starting the Yahoo feed worker on Time
: Wed Apr 18 10:31:01 +0530 2007
20070418-11:11:01 (22525) ***** Starting the Yahoo feed worker on Time
: Wed Apr 18 11:11:01 +0530 2007
20070418-11:51:01 (22525) ***** Starting the Yahoo feed worker on Time
: Wed Apr 18 11:51:01 +0530 2007
20070418-12:31:01 (22525) ***** Starting the Yahoo feed worker on Time
: Wed Apr 18 12:31:01 +0530 2007
20070418-13:11:01 (22525) ***** Starting the Yahoo feed worker on Time
: Wed Apr 18 13:11:01 +0530 2007
20070418-13:51:01 (22525) ***** Starting the Yahoo feed worker on Time
: Wed Apr 18 13:51:01 +0530 2007
20070418-14:31:01 (22525) ***** Starting the Yahoo feed worker on Time
: Wed Apr 18 14:31:01 +0530 2007
20070418-15:11:01 (22525) ***** Starting the Yahoo feed worker on Time
: Wed Apr 18 15:11:01 +0530 2007


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