cmccabe commented on a change in pull request #9002:
URL: https://github.com/apache/kafka/pull/9002#discussion_r452902273
##########
File path:
generator/src/main/java/org/apache/kafka/message/MessageGenerator.java
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@@ -267,10 +283,10 @@ public static void main(String[] args) throws Exception {
if (args.length == 0) {
System.out.println(USAGE);
System.exit(0);
- } else if (args.length != 3) {
+ } else if (args.length != 4) {
Review comment:
It's traditional for invoking a program with no arguments to print out
the usage message, and exit with success, which is 0. If there was a usage
error, then we exit with failure, which is 1.
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