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From Mich Talebzadeh <mich.talebza...@gmail.com>
Subject Re: Running pyspark job from virtual environment
Date Sun, 17 Jan 2021 18:18:09 GMT
Well. When you or application log in to Linux host (whether a physical tin
box or a virtual node), they execute a script called .bashrc at home
directory.

If it is a scheduled job then it will also execute the same as well.

In my Google Data proc cluster of three (one master and two workers), in
the master node I automatically activate the virtual environment as below

cd /usr/src/Python-3.7.9/environments; source virtualenv/bin/activate

Then I execute spark-submit script as follows:

spark-submit \
 --master yarn \
 --deploy-mode client \
 --jars /home/hduser/jars/spark-bigquery-latest.jar \
   analyze_house_prices_GCP.py

Note that as I understand using virtual environment is only necessary in
the master node, I don't touch worker nodes.

My suggestion is that you first test running a script in your master node
interactively once you have activated your virtual environment and see how
it goes.

HTH



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On Sun, 17 Jan 2021 at 17:22, rajat kumar <kumar.rajat20del@gmail.com>
wrote:

> Hi Mich,
>
> Thanks for response. I am running it through CLI (on the cluster).
>
> Since this will be scheduled job. I do not want to activate the
> environment manually. It should automatically take the path of virtual
> environment to run the job.
>
> For that I saw 3 properties which I mentioned. I think setting  some of
> them to point to environment binary will help to run the job from venv.
>
> PYTHONPATH
> PYSPARK_DRIVER_PYTHON
> PYSPARK_PYTHON
>
> Also, It has to be set in env.sh or bashrc file? What is the difference
> between spark-env.sh and bashrc
>
> Thanks
> Rajat
>
>
>
> On Sun, Jan 17, 2021 at 10:32 PM Mich Talebzadeh <
> mich.talebzadeh@gmail.com> wrote:
>
>> Hi Rajat,
>>
>> Are you running this through an IDE like PyCharm or on CLI?
>>
>> If you already have a Python Virtual environment, then just activate it
>>
>> The only env variable you need to set is export PYTHONPATH that you can
>> do it in your startup shell script .bashrc etc.
>>
>> Once you are in virtual environment, then you run:
>>
>> $SPARK_HOME/bin/spark-submit <Python.py)
>>
>> Alternatively you can chmod +x <python file), and add the following line
>> to the file
>>
>> #! /usr/bin/env python3
>>
>> and then you can run it as.
>>
>> ./<python.py>
>>
>> HTH
>>
>>
>>
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>> <https://www.linkedin.com/profile/view?id=AAEAAAAWh2gBxianrbJd6zP6AcPCCdOABUrV8Pw>*
>>
>>
>>
>>
>>
>> *Disclaimer:* Use it at your own risk. Any and all responsibility for
>> any loss, damage or destruction of data or any other property which may
>> arise from relying on this email's technical content is explicitly
>> disclaimed. The author will in no case be liable for any monetary damages
>> arising from such loss, damage or destruction.
>>
>>
>>
>>
>> On Sun, 17 Jan 2021 at 13:41, rajat kumar <kumar.rajat20del@gmail.com>
>> wrote:
>>
>>> Hello,
>>>
>>> Can anyone confirm here please?
>>>
>>> Regards
>>> Rajat
>>>
>>> On Sat, Jan 16, 2021 at 11:46 PM rajat kumar <kumar.rajat20del@gmail.com>
>>> wrote:
>>>
>>>> Hey Users,
>>>>
>>>> I want to run spark job from virtual environment using Python.
>>>>
>>>> Please note I am creating virtual env (using python3 -m venv env)
>>>>
>>>> I see that there are 3 variables for PYTHON which we have to set:
>>>> PYTHONPATH
>>>> PYSPARK_DRIVER_PYTHON
>>>> PYSPARK_PYTHON
>>>>
>>>> I have 2 doubts:
>>>> 1. If i want to use Virtual env, do I need to point python path of
>>>> virtual environment to all these variables?
>>>> 2. Should I set these variables in spark-env.sh or should I set them
>>>> using export statements.
>>>>
>>>> Regards
>>>> Rajat
>>>>
>>>>
>>>>

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