openinx commented on a change in pull request #10106: [FLINK-11463][e2e] Design 
the e2e java framework so that at least the Kafka streaming tests can run on it
URL: https://github.com/apache/flink/pull/10106#discussion_r343416566
 
 

 ##########
 File path: 
flink-end-to-end-tests/flink-end-to-end-tests-common/src/main/java/org/apache/flink/tests/util/AutoClosableProcess.java
 ##########
 @@ -70,10 +70,8 @@ public static AutoClosableProcessBuilder create(String... 
commands) {
         */
        public static final class AutoClosableProcessBuilder {
                private final String[] commands;
-               private Consumer<String> stdoutProcessor = line -> {
-               };
-               private Consumer<String> stderrProcessor = line -> {
-               };
+               private Consumer<String> stdoutProcessor = LOG::info;
+               private Consumer<String> stderrProcessor = LOG::info;
 
 Review comment:
   Maybe can log it debug... by default the stdout/stderr won't be shown.  If 
someone wanna to debug the IT case, then can configure the log level to debug.

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