In the src/jdk.jfr/share/classes/jdk.jfr/internal/dcmd/DCmdStart.java,
the last long value miss 'L' in if statement following.
if (delay < 1000L * 1000L * 1000) {
the last long value miss 'L' in if statement following.
if (delay < 1000L * 1000L * 1000) {