Github user yaojiefeng commented on a diff in the pull request:
https://github.com/apache/twill/pull/14#discussion_r86288660
--- Diff:
twill-yarn/src/main/java/org/apache/twill/internal/appmaster/RunningContainers.java
---
@@ -475,6 +496,11 @@ private void sendMessage(final String runnableName,
final Message message,
Futures.addCallback(controller.sendMessage(message), new
FutureCallback<Message>() {
@Override
public void onSuccess(Message result) {
+ //update log level information
--- End diff --
onSuccess here means that the message has been processed by the
TwillContainerService, and the log levels have been set up. If there is some
error setting up the log levels, an failed future with exception will be
returned to callback, so it will go to onFailure() method
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