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https://issues.apache.org/jira/browse/SPARK-26404?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17459552#comment-17459552
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Tim Sanders commented on SPARK-26404:
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I'm running into this as well. I'm on Spark 3.2.0, not using Kubernetes.
Setting {{spark.pyspark.python}} via {{SparkSession.builder.config}} has no
effect, but setting {{os.environ['PYSPARK_PYTHON']}} works as expected.
Setting {{PYSPARK_PYTHON}} inside of {{spark-env.sh}} does _not_ seem to work
with {{SparkSession}}, but it _does_ work with {{spark-submit}}.
Setting {{spark.pyspark.python}} inside of {{spark-defaults.conf}} does seem to
work for both {{spark-submit}} and {{SparkSession}}, but it doesn't help my use
case as I want to change the selected version at runtime based on the version
that the client is running (without maintaining multiple configs).
I agree with [~vpadulan], not sure why this was marked as "Not a Problem". Any
chance we can get this re-opened?
> set spark.pyspark.python or PYSPARK_PYTHON doesn't work in k8s client-cluster
> mode.
> -----------------------------------------------------------------------------------
>
> Key: SPARK-26404
> URL: https://issues.apache.org/jira/browse/SPARK-26404
> Project: Spark
> Issue Type: Bug
> Components: Kubernetes, Spark Core
> Affects Versions: 2.4.0
> Reporter: Dongqing Liu
> Priority: Major
>
> Neither
> conf.set("spark.executorEnv.PYSPARK_PYTHON", "/opt/pythonenvs/bin/python")
> nor
> conf.set("spark.pyspark.python", "/opt/pythonenvs/bin/python")
> works.
> Looks like the executor always picks python from PATH.
>
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