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https://issues.apache.org/jira/browse/SPARK-23449?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Andrew Korzhuev updated SPARK-23449:
Description:
`spark.driver.extraJavaOptions` and `spark.executor.extraJavaOptions` when
processed in `entrypoint.sh` does not preserve its ordering, which makes
`-XX:+UnlockExperimentalVMOptions` unusable, as you have to pass it before any
other experimental options.
Steps to reproduce:
# Set `spark.driver.extraJavaOptions`, e.g. `-XX:+UnlockExperimentalVMOptions
-XX:+UseG1GC -XX:+CMSClassUnloadingEnabled -XX:+UseCGroupMemoryLimitForHeap`
# Submit application to k8s cluster.
# Fetch logs and observe that on each run order of options is different and
when `-XX:+UnlockExperimentalVMOptions` is not the first startup will fail.
Expected behaviour:
# Order of `extraJavaOptions` should be preserved.
Cause:
`entrypoint.sh` fetches environment options with `env`, which doesn't guarantee
ordering.
{code:java}
env | grep SPARK_JAVA_OPT_ | sed 's/[^=]*=\(.*\)/\1/g' >
/tmp/java_opts.txt{code}
was:
`spark.driver.extraJavaOptions` and `spark.executor.extraJavaOptions` when
processed in `entrypoint.sh`, which makes `-XX:+UnlockExperimentalVMOptions`
unusable, as you have to pass it before any other experimental options.
Steps to reproduce:
# Set `spark.driver.extraJavaOptions`, e.g. `-XX:+UnlockExperimentalVMOptions
-XX:+UseG1GC -XX:+CMSClassUnloadingEnabled -XX:+UseCGroupMemoryLimitForHeap`
# Submit application to k8s cluster.
# Fetch logs and observe that on each run order of options is different and
when `-XX:+UnlockExperimentalVMOptions` is not the first startup will fail.
Expected behaviour:
# Order of `extraJavaOptions` should be preserved.
Cause:
`entrypoint.sh` fetches environment options with `env`, which doesn't guarantee
ordering.
{code:java}
env | grep SPARK_JAVA_OPT_ | sed 's/[^=]*=\(.*\)/\1/g' >
/tmp/java_opts.txt{code}
> Extra java options lose order in Docker context
> ---
>
> Key: SPARK-23449
> URL: https://issues.apache.org/jira/browse/SPARK-23449
> Project: Spark
> Issue Type: Bug
> Components: Kubernetes
>Affects Versions: 2.3.0
> Environment: Running Spark on K8S with supplied Docker image. Passing
> along extra java options.
>Reporter: Andrew Korzhuev
>Priority: Minor
> Fix For: 2.3.0
>
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> `spark.driver.extraJavaOptions` and `spark.executor.extraJavaOptions` when
> processed in `entrypoint.sh` does not preserve its ordering, which makes
> `-XX:+UnlockExperimentalVMOptions` unusable, as you have to pass it before
> any other experimental options.
>
> Steps to reproduce:
> # Set `spark.driver.extraJavaOptions`, e.g.
> `-XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:+CMSClassUnloadingEnabled
> -XX:+UseCGroupMemoryLimitForHeap`
> # Submit application to k8s cluster.
> # Fetch logs and observe that on each run order of options is different and
> when `-XX:+UnlockExperimentalVMOptions` is not the first startup will fail.
>
> Expected behaviour:
> # Order of `extraJavaOptions` should be preserved.
>
> Cause:
> `entrypoint.sh` fetches environment options with `env`, which doesn't
> guarantee ordering.
> {code:java}
> env | grep SPARK_JAVA_OPT_ | sed 's/[^=]*=\(.*\)/\1/g' >
> /tmp/java_opts.txt{code}
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