Re: Test to bring down containers

[Ashwin Chandra Putta]

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Devavrath,

You can easily solve this by using the DT Gateway REST API. Use the following API call to kill specific containers from a script.

/ws/v2/applications/{appid}/physicalPlan/containers/{containerId}/kill

refer: http://docs.datatorrent.com/dtgateway_api/

Regards,

Ashwin.

On Wed, Apr 5, 2017 at 6:52 PM, Devavrath S <devav...@gmail.com> wrote:

Hi All,

We wanted to have some kind of a Chaos Monkey test wherein we could bring down containers running operators in a controlled fashion. Could anyone kindly suggest a way/script that could bring down the containers?

We are trying test the HA feature of our application running on Apex.

Thanks & Regards,

Devavrath S

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Regards,

Ashwin.

[Devavrath S]

Hi Ashwin,

I thank you for your mail. I had one more follow up question.

I have several operators spawned which are all input operators. I am using an external Message Queuing system for communication between the operators instead of the traditional streaming and hence I do not require a heavy container (in size).

Is there a knob to tune the container size via the application? Because I might have hundreds of operators spawned and cannot have heavy containers.

Thanks & Regards,

Devavrath S

[Ashwin Putta]

Devavrath,

This should give you a good starting point on tuning the memory for the container with configuration.

http://docs.datatorrent.com/troubleshooting/#configuring-memory

Regards,

Ashwin.

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Regards,

Ashwin Chandra Putta.

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