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https://issues.apache.org/jira/browse/SPARK-27927?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16885234#comment-16885234
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Stavros Kontopoulos edited comment on SPARK-27927 at 7/15/19 1:35 PM:
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np. There will be a 2.4.4 release so there is chance to fix it there.
One thing to remember is also that we cannot keep 3.0.0 since it is outdated
according to fabric8io's compatibility matrix. So we need a fix, not sure if
there is a workaround like the one with ping timeout.
The jackson core thing is another important but also hard to upgrade. Actually
a customer asked this because it didnt pass security checks. That means 2.4.x
is not acceptable for some people.
Personally I was not aware of the daemon thread issue. I hope Spark 3.0.0 will
solve these two issues.
was (Author: skonto):
np. There will be a 2.4.4 release so there is chance to fix it there. The
jackson core thing is another important but also hard to upgrade. Actually a
customer asked this because it didnt pass security checks. That means 2.4.x is
not acceptable for some people.
Personally I was not aware of the daemon thread issue. I hope Spark 3.0.0 will
solve these two issues.
> driver pod hangs with pyspark 2.4.3 and master on kubenetes
> -----------------------------------------------------------
>
> Key: SPARK-27927
> URL: https://issues.apache.org/jira/browse/SPARK-27927
> Project: Spark
> Issue Type: Bug
> Components: Kubernetes, PySpark
> Affects Versions: 3.0.0, 2.4.3
> Environment: k8s 1.11.9
> spark 2.4.3 and master branch.
> Reporter: Edwin Biemond
> Priority: Major
> Attachments: driver_threads.log, executor_threads.log
>
>
> When we run a simple pyspark on spark 2.4.3 or 3.0.0 the driver pods hangs
> and never calls the shutdown hook.
> {code:java}
> #!/usr/bin/env python
> from __future__ import print_function
> import os
> import os.path
> import sys
> # Are we really in Spark?
> from pyspark.sql import SparkSession
> spark = SparkSession.builder.appName('hello_world').getOrCreate()
> print('Our Spark version is {}'.format(spark.version))
> print('Spark context information: {} parallelism={} python version={}'.format(
> str(spark.sparkContext),
> spark.sparkContext.defaultParallelism,
> spark.sparkContext.pythonVer
> ))
> {code}
> When we run this on kubernetes the driver and executer are just hanging. We
> see the output of this python script.
> {noformat}
> bash-4.2# cat stdout.log
> Our Spark version is 2.4.3
> Spark context information: <SparkContext
> master=k8s://https://kubernetes.default.svc:443 appName=hello_world>
> parallelism=2 python version=3.6{noformat}
> What works
> * a simple python with a print works fine on 2.4.3 and 3.0.0
> * same setup on 2.4.0
> * 2.4.3 spark-submit with the above pyspark
>
>
>
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