Hello, Kafka team.
I found that system tests that starts earlier versions of Kafka doesn’t work
with JDK11 [1]
There is two main reason for it:
* Kafka startup scripts contains removed JVM options like
`-XX:+PrintGCDateStamps or `-XX:UseParNewGC`.
* 0.10.0.1, 0.10.1.1, 0.10.2.2, 0.11.0.3 depends on JAXB that was removed
in JDK11.
I fixed both of this issues.
Tests results [3]
1. Can you, please, review my changes?
2. Now `upgrade_test.py` has only 2 failed tests for 0.8.2.2. Stack trace
below.
I seems like unfixable for me.
Can someone suggest how to fix it?
3. What tests should be checked on JDK11 for these changes?
```
Exception in thread "main" java.lang.NoClassDefFoundError:
org/apache/kafka/common/utils/Exit
at
org.apache.kafka.tools.VerifiableProducer.main(VerifiableProducer.java:540)
Caused by: java.lang.ClassNotFoundException: org.apache.kafka.common.utils.Exit
at
java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
at
java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
... 1 more
```
I can provide full tests logs if you need it. Full size 7.5gb.
[1] https://issues.apache.org/jira/browse/KAFKA-9573
[2] https://github.com/apache/kafka/pull/8138
[3]
https://issues.apache.org/jira/browse/KAFKA-9573?focusedCommentId=17041847&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-17041847
