[Swift-devel] coasters-hosts.pl script

Fri Mar 2 21:13:30 CST 2012

Hi Jon,

Thank you again for your time and very quick fix. I tested the fix with zeptoos and zepto-vn-eval/mosatest kernel profiles. The fix only worked with zeptoos. It did not work with zepto-vn-eval/mosatest (This profile contains some Mosastore related bug fixes so to run MosaStore we need this profile ). 

The reason is:

I can generate worker-hosts.txt only with zeptoos and it did not work with zepto-vn-eval/mosatest. This is because coasters-hosts.pl extract worker IP address from workers log files. But with zepto-vn-eval/mosatest worker log files didnt contain the IP address. Please see the log messages attached below. 

Do you have any idea ? It took few hours for me to narrow down the problem and find out that the issue is with kernel-profile . I hope this information will help you. 

Thank you
Emalayan

With zeptoos :

2012/03/03 02:41:01.492 INFO  - 2012.0303.023831.32459 Logging started: Sat Mar  3 02:41:01 2012
2012/03/03 02:41:01.492 INFO  - 2012.0303.023831.32459 Logging started: Sat Mar  3 02:41:01 2012
2012/03/03 02:41:01.494 INFO  - Running on node 172.18.1.19
2012/03/03 02:41:01.494 DEBUG - uri=http://172.17.3.12:22346
2012/03/03 02:41:01.494 DEBUG - scheme=http
2012/03/03 02:41:01.495 DEBUG - host=172.17.3.12
2012/03/03 02:41:01.495 DEBUG - port=22346
2012/03/03 02:41:01.495 DEBUG - blockid=2012.0303.023831.32459

With zepto-vn-eval/mosatest: 

2012/03/03 02:50:40.667 INFO  - 2012.0303.024814.15474 Logging started: Sat Mar  3 02:50:40 2012
2012/03/03 02:50:40.683 INFO  - Running on node (none)
2012/03/03 02:50:40.684 DEBUG - uri=http://172.17.3.12:22346
2012/03/03 02:50:40.684 DEBUG - scheme=http
2012/03/03 02:50:40.685 DEBUG - host=172.17.3.12
2012/03/03 02:50:40.685 DEBUG - port=22346
2012/03/03 02:50:40.686 DEBUG - blockid=2012.0303.024814.15474

________________________________
 From: Jonathan Monette <jonmon at mcs.anl.gov>
To: Justin M Wozniak <wozniak at mcs.anl.gov> 
Cc: "swift-devel at ci.uchicago.edu Devel" <swift-devel at ci.uchicago.edu>; emalayan at ece.ubc.ca 
Sent: Friday, 2 March 2012 2:21 PM
Subject: Re: [Swift-devel] coasters-hosts.pl script

Emalayan,
  We believe we have fixed the issue.  You can copy the new coasters-hosts.pl script from ~jonmon/surveyor/worker-init-test/coasters-hosts.pl

This script reads the worker logs located in the logs directory.  The steps to run are as follows:
start-coaster-service
<wait for workers to start>
./coasters-hosts.pl logs/worker-*.log > worker-hosts.txt

You MUST clean out the worker logs after you before you start a new coaster service to make sure the script searches the right worker log files.    This may not be ideal at the moment but this will help get you started.  If you have any other questions feel free to ask.  We will need to update the mosaswift site with the new information, we will do this soon.

On Mar 2, 2012, at 11:26 AM, Jonathan Monette wrote:

> Can we match this line: 2012/03/02 17:16:04.712 INFO  - Running on node 172.18.1.83 from the worker log,
> instead of this line: 2012-03-02 17:21:25,214+0000 DEBUG Cpu worker started: block=2012.0302.171344.704 host=172.18.1.83 id=0 from the cps log?
> 
> They both provide the same ip addresses.  And the worker log always has that ip address before the cps log does.
> 
> On Mar 2, 2012, at 11:15 AM, Jonathan Monette wrote:
> 
>> That fix still did not work.  I had moved it to the same spot.  It is still waiting for the worker-init.pl script to finish before the ip addresses are printed to the cps log.  Those ip addresses are what is needed by the coaster-hosts.pl script to finish.  If I create an empty file for the coaster-host.pl script to read, then the work continues and the ip addresses show up in the cps log.  
>> 
>> Why is log4j waiting to add those lines to the cps log after the worker-init.pl script is finished?
>> 
>> On Mar 2, 2012, at 11:05 AM, Jonathan Monette wrote:
>> 
>>> Thanks, in my copy I thought I had moved the reconnect to before the init-cmd and it still wasn't working.  I will test with your change.  I just verified that it was indeed waiting for the worker-init.pl script to finish.  I created an empty file for the script to read and it finished connecting and the ip addresses I needed were added to the cps log.  I will also be testing your fix.
>>> 
>>> On Mar 2, 2012, at 11:01 AM, Justin M Wozniak wrote:
>>> 
>>>> 
>>>> Yes- I must have tested this with a different log file.  I just checked in and installed in ~wozniak/Public a fix for this that launches WORKER_INIT_CMD after the reconnect().  I am a little worried about time outs but it works so far.  I will continue testing...
>>>>     Justin
>>>> 
>>>> On Thu, 1 Mar 2012, Jonathan Monette wrote:
>>>> 
>>>>> Justin,
>>>>> So I have been trying to help Emalayan get the host list file for the worker-init.pl script.  It seems the cps log file is not providing the ip addresses for the coasters-hosts.pl script.  I thought this was maybe because we did not have the correct log4j setting set but we have the Coaster service Cpu set to DEBUG.  So for some reason the workers are not connecting to the service.  When I comment out the export WORKER_ENVIRONEMTN="…" line in the coaster-service.conf file I see the workers connect and the cps log file shows there ip addresses.  However when setting this line it seems they are not connecting.
>>>>> 
>>>>> Emalayan thought there might be some sort of circular dependency going with the host-list file and the worker.  The worker requires the host-list file so that it can run the worker-init.pl script and then connect but the host-list file cannot be generated because the workers cannot connect.  I noticed in your swift-test directory the cps files did have the ip addresses set and coasters-hosts.pl found the ip addresses and reported them.  Did you try that test with setting the WORKER_ENVIRONMENT variable in the coaster-service.conf file?  Any idea what may be happening?  The job is running when looking under cqstat.
>>>>> 
>>>>> A side note: At the mosaswift site, your example talks about running the coasters-hosts.pl on the cps log but the example you provide runs it on logs/coasters.log.  This may need to be changed.  Also, should provide the log4j setting that is required to generate the Cpu line with the worker ip address just to clarify that this line should be set for this script to work.
>>>>> 
>>>>> For reference, this line: log4j.logger.org.globus.cog.abstraction.coaster.service.job.manager.Cpu=DEBUG
>>>> 
>>>> -- 
>>>> Justin M Wozniak
>>> 
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