Fix the 'every' utility command to remove processing gaps

[GoogleCodeExporter]

'every' us a utility commonly used by workers in their core loops. It tells 
them to sleep for a while if they've not done anything. During those sleeps the 
worker will read data from its parent and update internal stats.

There are bug(s):

- No way for a worker to tell every to loop immediately and look for more work.
- If a tracker has spent more than the specified time doing work, it does not 
fetch waiting data from the parent process.

If both are fixed the JobMaster can speed up fsck/rebalance quite a bit, and 
other workers can speed through batch jobs a lot better.

Original issue reported on code.google.com by dorma...@rydia.net on 20 Sep 2010 at 12:30

[GoogleCodeExporter]

er, fixed already in master branch, will go out with 2.40.

Original comment by dorma...@rydia.net on 25 Sep 2010 at 6:54

• Changed state: Fixed