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Posted to reviews@ambari.apache.org by Eugene Chekanskiy <ec...@hortonworks.com> on 2017/03/06 17:45:01 UTC

Review Request 57344: Commands timed-out on ambari host without any error logs

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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/57344/
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Review request for Ambari, Attila Doroszlai, Andrew Onischuk, Dmytro Sen, Robert Levas, and Sebastian Toader.


Bugs: AMBARI-20323
    https://issues.apache.org/jira/browse/AMBARI-20323


Repository: ambari


Description
-------

All status command execution logic moved under one file.

* added protection for hardkilling(now process tries to die gracefully)
* added protection for queue internal logic blocking(underlying pipes hard closed)
* added lock around queues that will prevent from using queues before new one will be created in case of recreating executor process


Diffs
-----

  ambari-agent/src/main/python/ambari_agent/ActionQueue.py 5300b52 
  ambari-agent/src/main/python/ambari_agent/Controller.py 61a74e6 
  ambari-agent/src/main/python/ambari_agent/StatusCommandsExecutor.py 2f15770 
  ambari-agent/src/main/python/ambari_agent/main.py 3f333c4 
  ambari-agent/src/test/python/ambari_agent/TestActionQueue.py 9fefefb 
  ambari-agent/src/test/python/ambari_agent/TestController.py 663e215 
  ambari-agent/src/test/python/ambari_agent/TestMain.py 97c448b 


Diff: https://reviews.apache.org/r/57344/diff/1/


Testing
-------

mvn clean test, manual testing


Thanks,

Eugene Chekanskiy


Re: Review Request 57344: Commands timed-out on ambari host without any error logs

Posted by Andrew Onischuk <ao...@hortonworks.com>.
-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/57344/#review168137
-----------------------------------------------------------


Ship it!




Ship It!

- Andrew Onischuk


On March 7, 2017, 3:32 p.m., Eugene Chekanskiy wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/57344/
> -----------------------------------------------------------
> 
> (Updated March 7, 2017, 3:32 p.m.)
> 
> 
> Review request for Ambari, Attila Doroszlai, Andrew Onischuk, Dmytro Sen, Robert Levas, and Sebastian Toader.
> 
> 
> Bugs: AMBARI-20323
>     https://issues.apache.org/jira/browse/AMBARI-20323
> 
> 
> Repository: ambari
> 
> 
> Description
> -------
> 
> All status command execution logic moved under one file.
> 
> * added protection for hardkilling(now process tries to die gracefully)
> * added protection for queue internal logic blocking(underlying pipes hard closed)
> * added lock around queues that will prevent from using queues before new one will be created in case of recreating executor process
> 
> 
> Diffs
> -----
> 
>   ambari-agent/src/main/python/ambari_agent/ActionQueue.py 5300b52 
>   ambari-agent/src/main/python/ambari_agent/Controller.py 61a74e6 
>   ambari-agent/src/main/python/ambari_agent/StatusCommandsExecutor.py 2f15770 
>   ambari-agent/src/main/python/ambari_agent/main.py 3f333c4 
>   ambari-agent/src/test/python/ambari_agent/TestActionQueue.py 9fefefb 
>   ambari-agent/src/test/python/ambari_agent/TestController.py 663e215 
>   ambari-agent/src/test/python/ambari_agent/TestMain.py 97c448b 
> 
> 
> Diff: https://reviews.apache.org/r/57344/diff/3/
> 
> 
> Testing
> -------
> 
> mvn clean test, manual testing
> 
> 
> Thanks,
> 
> Eugene Chekanskiy
> 
>


Re: Review Request 57344: Commands timed-out on ambari host without any error logs

Posted by Eugene Chekanskiy <ec...@hortonworks.com>.

> On March 8, 2017, 1:26 p.m., Attila Doroszlai wrote:
> > ambari-agent/src/main/python/ambari_agent/StatusCommandsExecutor.py
> > Lines 47 (patched)
> > <https://reviews.apache.org/r/57344/diff/4/?file=1658295#file1658295line56>
> >
> >     Is this eagerly created `Process` used anywhere?  Could it be replaced with `None`?

done


> On March 8, 2017, 1:26 p.m., Attila Doroszlai wrote:
> > ambari-agent/src/main/python/ambari_agent/StatusCommandsExecutor.py
> > Lines 142 (patched)
> > <https://reviews.apache.org/r/57344/diff/4/?file=1658295#file1658295line151>
> >
> >     Won't this set `timedOutEvent` even if out queue loop was terminated due to `mustDieEvent`?

it possibly can, but it is actually not important


> On March 8, 2017, 1:26 p.m., Attila Doroszlai wrote:
> > ambari-agent/src/main/python/ambari_agent/StatusCommandsExecutor.py
> > Lines 236-237 (patched)
> > <https://reviews.apache.org/r/57344/diff/4/?file=1658295#file1658295line246>
> >
> >     Could this be simplified by putting `not self.worker_process` as 2nd and `not self.worker_process.is_alive()` as 3rd OR condition, this way omitting `self.worker_process and`?

done


- Eugene


-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/57344/#review168289
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On March 9, 2017, 12:22 p.m., Eugene Chekanskiy wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/57344/
> -----------------------------------------------------------
> 
> (Updated March 9, 2017, 12:22 p.m.)
> 
> 
> Review request for Ambari, Attila Doroszlai, Andrew Onischuk, Dmytro Sen, Robert Levas, and Sebastian Toader.
> 
> 
> Bugs: AMBARI-20323
>     https://issues.apache.org/jira/browse/AMBARI-20323
> 
> 
> Repository: ambari
> 
> 
> Description
> -------
> 
> All status command execution logic moved under one file.
> 
> * added protection for hardkilling(now process tries to die gracefully)
> * added protection for queue internal logic blocking(underlying pipes hard closed)
> * added lock around queues that will prevent from using queues before new one will be created in case of recreating executor process
> 
> 
> Diffs
> -----
> 
>   ambari-agent/src/main/python/ambari_agent/ActionQueue.py 5300b52 
>   ambari-agent/src/main/python/ambari_agent/Controller.py 61a74e6 
>   ambari-agent/src/main/python/ambari_agent/StatusCommandsExecutor.py 2f15770 
>   ambari-agent/src/main/python/ambari_agent/main.py 3f333c4 
>   ambari-agent/src/test/python/ambari_agent/TestActionQueue.py 9fefefb 
>   ambari-agent/src/test/python/ambari_agent/TestController.py 663e215 
>   ambari-agent/src/test/python/ambari_agent/TestMain.py 97c448b 
> 
> 
> Diff: https://reviews.apache.org/r/57344/diff/5/
> 
> 
> Testing
> -------
> 
> mvn clean test, manual testing
> 
> 
> Thanks,
> 
> Eugene Chekanskiy
> 
>


Re: Review Request 57344: Commands timed-out on ambari host without any error logs

Posted by Attila Doroszlai <ad...@hortonworks.com>.
-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/57344/#review168289
-----------------------------------------------------------


Fix it, then Ship it!





ambari-agent/src/main/python/ambari_agent/StatusCommandsExecutor.py
Lines 47 (patched)
<https://reviews.apache.org/r/57344/#comment240485>

    Is this eagerly created `Process` used anywhere?  Could it be replaced with `None`?



ambari-agent/src/main/python/ambari_agent/StatusCommandsExecutor.py
Lines 142 (patched)
<https://reviews.apache.org/r/57344/#comment240486>

    Won't this set `timedOutEvent` even if out queue loop was terminated due to `mustDieEvent`?



ambari-agent/src/main/python/ambari_agent/StatusCommandsExecutor.py
Lines 236-237 (patched)
<https://reviews.apache.org/r/57344/#comment240484>

    Could this be simplified by putting `not self.worker_process` as 2nd and `not self.worker_process.is_alive()` as 3rd OR condition, this way omitting `self.worker_process and`?



ambari-agent/src/main/python/ambari_agent/StatusCommandsExecutor.py
Lines 268-272 (patched)
<https://reviews.apache.org/r/57344/#comment240482>

    The comment and log message state the same (ie. "died gracefully"), but they are on different branches of the `if`.  I guess `process_logs()` and the commend belong to the `else` branch instead.


- Attila Doroszlai


On March 7, 2017, 4:41 p.m., Eugene Chekanskiy wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/57344/
> -----------------------------------------------------------
> 
> (Updated March 7, 2017, 4:41 p.m.)
> 
> 
> Review request for Ambari, Attila Doroszlai, Andrew Onischuk, Dmytro Sen, Robert Levas, and Sebastian Toader.
> 
> 
> Bugs: AMBARI-20323
>     https://issues.apache.org/jira/browse/AMBARI-20323
> 
> 
> Repository: ambari
> 
> 
> Description
> -------
> 
> All status command execution logic moved under one file.
> 
> * added protection for hardkilling(now process tries to die gracefully)
> * added protection for queue internal logic blocking(underlying pipes hard closed)
> * added lock around queues that will prevent from using queues before new one will be created in case of recreating executor process
> 
> 
> Diffs
> -----
> 
>   ambari-agent/src/main/python/ambari_agent/ActionQueue.py 5300b52 
>   ambari-agent/src/main/python/ambari_agent/Controller.py 61a74e6 
>   ambari-agent/src/main/python/ambari_agent/StatusCommandsExecutor.py 2f15770 
>   ambari-agent/src/main/python/ambari_agent/main.py 3f333c4 
>   ambari-agent/src/test/python/ambari_agent/TestActionQueue.py 9fefefb 
>   ambari-agent/src/test/python/ambari_agent/TestController.py 663e215 
>   ambari-agent/src/test/python/ambari_agent/TestMain.py 97c448b 
> 
> 
> Diff: https://reviews.apache.org/r/57344/diff/4/
> 
> 
> Testing
> -------
> 
> mvn clean test, manual testing
> 
> 
> Thanks,
> 
> Eugene Chekanskiy
> 
>


Re: Review Request 57344: Commands timed-out on ambari host without any error logs

Posted by Eugene Chekanskiy <ec...@hortonworks.com>.
-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/57344/
-----------------------------------------------------------

(Updated March 9, 2017, 12:22 p.m.)


Review request for Ambari, Attila Doroszlai, Andrew Onischuk, Dmytro Sen, Robert Levas, and Sebastian Toader.


Bugs: AMBARI-20323
    https://issues.apache.org/jira/browse/AMBARI-20323


Repository: ambari


Description
-------

All status command execution logic moved under one file.

* added protection for hardkilling(now process tries to die gracefully)
* added protection for queue internal logic blocking(underlying pipes hard closed)
* added lock around queues that will prevent from using queues before new one will be created in case of recreating executor process


Diffs (updated)
-----

  ambari-agent/src/main/python/ambari_agent/ActionQueue.py 5300b52 
  ambari-agent/src/main/python/ambari_agent/Controller.py 61a74e6 
  ambari-agent/src/main/python/ambari_agent/StatusCommandsExecutor.py 2f15770 
  ambari-agent/src/main/python/ambari_agent/main.py 3f333c4 
  ambari-agent/src/test/python/ambari_agent/TestActionQueue.py 9fefefb 
  ambari-agent/src/test/python/ambari_agent/TestController.py 663e215 
  ambari-agent/src/test/python/ambari_agent/TestMain.py 97c448b 


Diff: https://reviews.apache.org/r/57344/diff/5/

Changes: https://reviews.apache.org/r/57344/diff/4-5/


Testing
-------

mvn clean test, manual testing


Thanks,

Eugene Chekanskiy


Re: Review Request 57344: Commands timed-out on ambari host without any error logs

Posted by Sebastian Toader <st...@hortonworks.com>.
-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/57344/#review168141
-----------------------------------------------------------


Ship it!




Ship It!

- Sebastian Toader


On March 7, 2017, 4:41 p.m., Eugene Chekanskiy wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/57344/
> -----------------------------------------------------------
> 
> (Updated March 7, 2017, 4:41 p.m.)
> 
> 
> Review request for Ambari, Attila Doroszlai, Andrew Onischuk, Dmytro Sen, Robert Levas, and Sebastian Toader.
> 
> 
> Bugs: AMBARI-20323
>     https://issues.apache.org/jira/browse/AMBARI-20323
> 
> 
> Repository: ambari
> 
> 
> Description
> -------
> 
> All status command execution logic moved under one file.
> 
> * added protection for hardkilling(now process tries to die gracefully)
> * added protection for queue internal logic blocking(underlying pipes hard closed)
> * added lock around queues that will prevent from using queues before new one will be created in case of recreating executor process
> 
> 
> Diffs
> -----
> 
>   ambari-agent/src/main/python/ambari_agent/ActionQueue.py 5300b52 
>   ambari-agent/src/main/python/ambari_agent/Controller.py 61a74e6 
>   ambari-agent/src/main/python/ambari_agent/StatusCommandsExecutor.py 2f15770 
>   ambari-agent/src/main/python/ambari_agent/main.py 3f333c4 
>   ambari-agent/src/test/python/ambari_agent/TestActionQueue.py 9fefefb 
>   ambari-agent/src/test/python/ambari_agent/TestController.py 663e215 
>   ambari-agent/src/test/python/ambari_agent/TestMain.py 97c448b 
> 
> 
> Diff: https://reviews.apache.org/r/57344/diff/4/
> 
> 
> Testing
> -------
> 
> mvn clean test, manual testing
> 
> 
> Thanks,
> 
> Eugene Chekanskiy
> 
>


Re: Review Request 57344: Commands timed-out on ambari host without any error logs

Posted by Eugene Chekanskiy <ec...@hortonworks.com>.
-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/57344/
-----------------------------------------------------------

(Updated March 7, 2017, 3:41 p.m.)


Review request for Ambari, Attila Doroszlai, Andrew Onischuk, Dmytro Sen, Robert Levas, and Sebastian Toader.


Bugs: AMBARI-20323
    https://issues.apache.org/jira/browse/AMBARI-20323


Repository: ambari


Description
-------

All status command execution logic moved under one file.

* added protection for hardkilling(now process tries to die gracefully)
* added protection for queue internal logic blocking(underlying pipes hard closed)
* added lock around queues that will prevent from using queues before new one will be created in case of recreating executor process


Diffs (updated)
-----

  ambari-agent/src/main/python/ambari_agent/ActionQueue.py 5300b52 
  ambari-agent/src/main/python/ambari_agent/Controller.py 61a74e6 
  ambari-agent/src/main/python/ambari_agent/StatusCommandsExecutor.py 2f15770 
  ambari-agent/src/main/python/ambari_agent/main.py 3f333c4 
  ambari-agent/src/test/python/ambari_agent/TestActionQueue.py 9fefefb 
  ambari-agent/src/test/python/ambari_agent/TestController.py 663e215 
  ambari-agent/src/test/python/ambari_agent/TestMain.py 97c448b 


Diff: https://reviews.apache.org/r/57344/diff/4/

Changes: https://reviews.apache.org/r/57344/diff/3-4/


Testing
-------

mvn clean test, manual testing


Thanks,

Eugene Chekanskiy


Re: Review Request 57344: Commands timed-out on ambari host without any error logs

Posted by Eugene Chekanskiy <ec...@hortonworks.com>.
-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/57344/
-----------------------------------------------------------

(Updated March 7, 2017, 3:32 p.m.)


Review request for Ambari, Attila Doroszlai, Andrew Onischuk, Dmytro Sen, Robert Levas, and Sebastian Toader.


Bugs: AMBARI-20323
    https://issues.apache.org/jira/browse/AMBARI-20323


Repository: ambari


Description
-------

All status command execution logic moved under one file.

* added protection for hardkilling(now process tries to die gracefully)
* added protection for queue internal logic blocking(underlying pipes hard closed)
* added lock around queues that will prevent from using queues before new one will be created in case of recreating executor process


Diffs (updated)
-----

  ambari-agent/src/main/python/ambari_agent/ActionQueue.py 5300b52 
  ambari-agent/src/main/python/ambari_agent/Controller.py 61a74e6 
  ambari-agent/src/main/python/ambari_agent/StatusCommandsExecutor.py 2f15770 
  ambari-agent/src/main/python/ambari_agent/main.py 3f333c4 
  ambari-agent/src/test/python/ambari_agent/TestActionQueue.py 9fefefb 
  ambari-agent/src/test/python/ambari_agent/TestController.py 663e215 
  ambari-agent/src/test/python/ambari_agent/TestMain.py 97c448b 


Diff: https://reviews.apache.org/r/57344/diff/3/

Changes: https://reviews.apache.org/r/57344/diff/2-3/


Testing
-------

mvn clean test, manual testing


Thanks,

Eugene Chekanskiy


Re: Review Request 57344: Commands timed-out on ambari host without any error logs

Posted by Eugene Chekanskiy <ec...@hortonworks.com>.
-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/57344/
-----------------------------------------------------------

(Updated March 7, 2017, 3:28 p.m.)


Review request for Ambari, Attila Doroszlai, Andrew Onischuk, Dmytro Sen, Robert Levas, and Sebastian Toader.


Bugs: AMBARI-20323
    https://issues.apache.org/jira/browse/AMBARI-20323


Repository: ambari


Description
-------

All status command execution logic moved under one file.

* added protection for hardkilling(now process tries to die gracefully)
* added protection for queue internal logic blocking(underlying pipes hard closed)
* added lock around queues that will prevent from using queues before new one will be created in case of recreating executor process


Diffs (updated)
-----

  ambari-agent/src/main/python/ambari_agent/ActionQueue.py 5300b52 
  ambari-agent/src/main/python/ambari_agent/Controller.py 61a74e6 
  ambari-agent/src/main/python/ambari_agent/StatusCommandsExecutor.py 2f15770 
  ambari-agent/src/main/python/ambari_agent/main.py 3f333c4 
  ambari-agent/src/test/python/ambari_agent/TestActionQueue.py 9fefefb 
  ambari-agent/src/test/python/ambari_agent/TestController.py 663e215 
  ambari-agent/src/test/python/ambari_agent/TestMain.py 97c448b 


Diff: https://reviews.apache.org/r/57344/diff/2/

Changes: https://reviews.apache.org/r/57344/diff/1-2/


Testing
-------

mvn clean test, manual testing


Thanks,

Eugene Chekanskiy


Re: Review Request 57344: Commands timed-out on ambari host without any error logs

Posted by Eugene Chekanskiy <ec...@hortonworks.com>.

> On March 7, 2017, 11:53 a.m., Sebastian Toader wrote:
> > ambari-agent/src/main/python/ambari_agent/StatusCommandsExecutor.py
> > Lines 158 (patched)
> > <https://reviews.apache.org/r/57344/diff/1/?file=1656769#file1656769line187>
> >
> >     Could this deadlock in case the worker process is killed from outside thus being shut down without properly closing the mp_result_queue?

No. Queues is closed on process relaunch and every place that blocked will be unblocked by IOError.


- Eugene


-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/57344/#review168101
-----------------------------------------------------------


On March 7, 2017, 3:28 p.m., Eugene Chekanskiy wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/57344/
> -----------------------------------------------------------
> 
> (Updated March 7, 2017, 3:28 p.m.)
> 
> 
> Review request for Ambari, Attila Doroszlai, Andrew Onischuk, Dmytro Sen, Robert Levas, and Sebastian Toader.
> 
> 
> Bugs: AMBARI-20323
>     https://issues.apache.org/jira/browse/AMBARI-20323
> 
> 
> Repository: ambari
> 
> 
> Description
> -------
> 
> All status command execution logic moved under one file.
> 
> * added protection for hardkilling(now process tries to die gracefully)
> * added protection for queue internal logic blocking(underlying pipes hard closed)
> * added lock around queues that will prevent from using queues before new one will be created in case of recreating executor process
> 
> 
> Diffs
> -----
> 
>   ambari-agent/src/main/python/ambari_agent/ActionQueue.py 5300b52 
>   ambari-agent/src/main/python/ambari_agent/Controller.py 61a74e6 
>   ambari-agent/src/main/python/ambari_agent/StatusCommandsExecutor.py 2f15770 
>   ambari-agent/src/main/python/ambari_agent/main.py 3f333c4 
>   ambari-agent/src/test/python/ambari_agent/TestActionQueue.py 9fefefb 
>   ambari-agent/src/test/python/ambari_agent/TestController.py 663e215 
>   ambari-agent/src/test/python/ambari_agent/TestMain.py 97c448b 
> 
> 
> Diff: https://reviews.apache.org/r/57344/diff/2/
> 
> 
> Testing
> -------
> 
> mvn clean test, manual testing
> 
> 
> Thanks,
> 
> Eugene Chekanskiy
> 
>


Re: Review Request 57344: Commands timed-out on ambari host without any error logs

Posted by Sebastian Toader <st...@hortonworks.com>.
-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/57344/#review168101
-----------------------------------------------------------




ambari-agent/src/main/python/ambari_agent/Controller.py
Line 208 (original), 205 (patched)
<https://reviews.apache.org/r/57344/#comment240233>

    "INITIAL_START" might be confusing as the server may request the agent to re-register. Eg. the server was restarted, or agent lost heartbeat etc.



ambari-agent/src/main/python/ambari_agent/Controller.py
Lines 479-480 (patched)
<https://reviews.apache.org/r/57344/#comment240225>

    Isn't this the same as ```self.statusCommandsExecutor.relaunch("INITIAL_START")``` in ```def registerWithServer(self):```? 
    
    Would it make sense to create ```StatusCommandsExecutor``` in ```def registerWithServer(self):``` just before calling ```self.statusCommandsExecutor.relaunch("INITIAL_START")``` if hasn't been instantiated yet?



ambari-agent/src/main/python/ambari_agent/StatusCommandsExecutor.py
Line 43 (original), 40 (patched)
<https://reviews.apache.org/r/57344/#comment240226>

    Comment what this lock is used for.



ambari-agent/src/main/python/ambari_agent/StatusCommandsExecutor.py
Lines 51 (patched)
<https://reviews.apache.org/r/57344/#comment240237>

    This doesn't seem to be used?



ambari-agent/src/main/python/ambari_agent/StatusCommandsExecutor.py
Lines 60 (patched)
<https://reviews.apache.org/r/57344/#comment240227>

    Messages needs to be logged to ambari-agent.log as there are environments logs are collected from ambari-agent.log and published into a central log collector.
    
    Perhaps the parent process could read the out file and channel the content into ambari-agent.log.



ambari-agent/src/main/python/ambari_agent/StatusCommandsExecutor.py
Lines 94 (patched)
<https://reviews.apache.org/r/57344/#comment240235>

    You could use the timed_out property.



ambari-agent/src/main/python/ambari_agent/StatusCommandsExecutor.py
Lines 158 (patched)
<https://reviews.apache.org/r/57344/#comment240238>

    Could this deadlock in case the worker process is killed from outside thus being shut down without properly closing the mp_result_queue?



ambari-agent/src/main/python/ambari_agent/main.py
Lines 317-318 (original), 318-319 (patched)
<https://reviews.apache.org/r/57344/#comment240236>

    How this ensures that status command executor is re-launched in case is killedd from oputside?


- Sebastian Toader


On March 6, 2017, 6:45 p.m., Eugene Chekanskiy wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/57344/
> -----------------------------------------------------------
> 
> (Updated March 6, 2017, 6:45 p.m.)
> 
> 
> Review request for Ambari, Attila Doroszlai, Andrew Onischuk, Dmytro Sen, Robert Levas, and Sebastian Toader.
> 
> 
> Bugs: AMBARI-20323
>     https://issues.apache.org/jira/browse/AMBARI-20323
> 
> 
> Repository: ambari
> 
> 
> Description
> -------
> 
> All status command execution logic moved under one file.
> 
> * added protection for hardkilling(now process tries to die gracefully)
> * added protection for queue internal logic blocking(underlying pipes hard closed)
> * added lock around queues that will prevent from using queues before new one will be created in case of recreating executor process
> 
> 
> Diffs
> -----
> 
>   ambari-agent/src/main/python/ambari_agent/ActionQueue.py 5300b52 
>   ambari-agent/src/main/python/ambari_agent/Controller.py 61a74e6 
>   ambari-agent/src/main/python/ambari_agent/StatusCommandsExecutor.py 2f15770 
>   ambari-agent/src/main/python/ambari_agent/main.py 3f333c4 
>   ambari-agent/src/test/python/ambari_agent/TestActionQueue.py 9fefefb 
>   ambari-agent/src/test/python/ambari_agent/TestController.py 663e215 
>   ambari-agent/src/test/python/ambari_agent/TestMain.py 97c448b 
> 
> 
> Diff: https://reviews.apache.org/r/57344/diff/1/
> 
> 
> Testing
> -------
> 
> mvn clean test, manual testing
> 
> 
> Thanks,
> 
> Eugene Chekanskiy
> 
>