Github user zentol commented on the issue:
https://github.com/apache/flink/pull/5718
This change appears to be focus mostly around Travis which i dislike a bit.
I'd rather add a custom `Timeout` that prints the thread-dump so we still
get nice behavior when running things locally/in the IDE.
```
@Rule
public final Timeout timeout = new MyTimeOut(10, TimeUnit.MILLISECONDS);
public static class MyTimeOut extends Timeout {
public MyTimeOut(long timeout, TimeUnit timeUnit) {
super(timeout, timeUnit);
}
@Override
public Statement apply(Statement base, Description description)
{
Statement fail = super.apply(base, description);
return new Statement() {
@Override
public void evaluate() throws Throwable {
System.out.println(crunchifyGenerateThreadDump());
fail.evaluate();
}
};
}
}
public static String crunchifyGenerateThreadDump() {
final StringBuilder dump = new StringBuilder();
final ThreadMXBean threadMXBean =
ManagementFactory.getThreadMXBean();
final ThreadInfo[] threadInfos =
threadMXBean.getThreadInfo(threadMXBean.getAllThreadIds(), 100);
for (ThreadInfo threadInfo : threadInfos) {
dump.append('"');
dump.append(threadInfo.getThreadName());
dump.append("\" ");
final Thread.State state = threadInfo.getThreadState();
dump.append("\n java.lang.Thread.State: ");
dump.append(state);
final StackTraceElement[] stackTraceElements =
threadInfo.getStackTrace();
for (final StackTraceElement stackTraceElement :
stackTraceElements) {
dump.append("\n at ");
dump.append(stackTraceElement);
}
dump.append("\n\n");
}
return dump.toString();
}
```
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