Matthias Veit created MESOS-2718: ------------------------------------ Summary: Future created by State.names() throws an Illegal ExecutionException Key: MESOS-2718 URL: https://issues.apache.org/jira/browse/MESOS-2718 Project: Mesos Issue Type: Bug Components: java api Affects Versions: 0.22.1 Environment: OSX, Mesos 0.22.1 Reporter: Matthias Veit
During application startup, we call call org.apache.mesos.state.State.names(). This will return a java Future. Everything is fine in the success case. In the error case, the future can throw either an InterruptedException, ExecutionException or a RuntimeException. The ExecutionException indicates, that the future was not successful. This is the text from the javadoc: Exception thrown when attempting to retrieve the result of a task that aborted by throwing an exception. This exception can be inspected using the Throwable.getCause() method. See here: https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/ExecutionException.html The ExecutionException thrown by mesos in the above method does not hold a reference to the root cause, but returns a reference to this as cause (ex == ex.getCause()). ExecutionException really is a wrapper exception to indicate success or failure of the java future and should always have a root cause. With the current implementation we can't distinguish between a Future error or an application error. Please provide always the exception cause. -- This message was sent by Atlassian JIRA (v6.3.4#6332)