java.lang.ClassNotFoundException: jdk.jfr.Event with minimized JRE

[alianman]

When I use Spring Batch with minimized JRE (without jdk.jfr module) following exception is thrown at TaskExecutorJobOperator.start method:

<#f190dde2> java.lang.ClassNotFoundException: jdk.jfr.Event
	... 188 more
Wrapped by: <#57495acc> java.lang.NoClassDefFoundError: jdk/jfr/Event
	at org.springframework.batch.core.launch.support.TaskExecutorJobOperator.start(TaskExecutorJobOperator.java:112)
[truncated]

Is JFR required for Spring Batch?

[nikitanagar08]

I would like to work on this issue. I've implemented a fix that makes JFR optional by wrapping the JobLaunchEvent creation in a try-catch block to handle NoClassDefFoundError when the jdk.jfr module is not available. This allows Spring Batch to work on minimized JREs without JFR support. PR #5334 is ready for review.