Github user yaojiefeng commented on a diff in the pull request:
https://github.com/apache/twill/pull/14#discussion_r86282520
--- Diff: twill-api/src/main/java/org/apache/twill/api/TwillController.java
---
@@ -89,4 +90,44 @@
* @return A {@link Future} that will be completed when the restart
operation has been done.
*/
Future<String> restartInstances(String runnable, int instanceId, int...
moreInstanceIds);
+
--- End diff --
We are sending messages using ZooKeeper. The future will be completed once
the message has been processed. Or if there is problem sending the message, an
exception will be added as the value of the future.
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