Github user StephanEwen commented on a diff in the pull request:
https://github.com/apache/flink/pull/3340#discussion_r102995512
--- Diff:
flink-runtime/src/test/java/org/apache/flink/runtime/executiongraph/ExecutionVertexCancelTest.java
---
@@ -440,6 +440,72 @@ public void testSendCancelAndReceiveFail() {
}
}
+ /**
+ * For job manager failure recovery case, the execution may still in
reconciling state but already recovered
+ * basic information including slot, when process the failed execution,
it will trigger to cancel all the current
+ * executions. It is necessary to send cancel rpc to reconciling state
execution with slot because the task manger
+ * already reports its status for recovery.
+ */
+ @Test
+ public void testCancelFromReconcilingWithSlot() {
+ try {
+ final JobVertexID jid = new JobVertexID();
+ final ExecutionJobVertex ejv = getExecutionVertex(jid,
new DirectScheduledExecutorService());
+ final ExecutionVertex vertex = new ExecutionVertex(ejv,
0, new IntermediateResult[0], AkkaUtils.getDefaultTimeout());
+ final ActorGateway actorGateway = new
CancelSequenceActorGateway(TestingUtils.directExecutionContext(), 1);
+
+ final Instance instance = getInstance(new
ActorTaskManagerGateway(actorGateway));
+ final SimpleSlot slot = instance.allocateSimpleSlot(new
JobID());
+
+ setVertexState(vertex, ExecutionState.RECONCILING);
+ setVertexResource(vertex, slot);
+
+ assertEquals(ExecutionState.RECONCILING,
vertex.getExecutionState());
+
+ vertex.cancel();
+
vertex.getCurrentExecutionAttempt().cancelingComplete(); // response by task
manager once actually canceled
+
+ assertEquals(ExecutionState.CANCELED,
vertex.getExecutionState());
+ assertTrue(slot.isReleased());
+ assertNull(vertex.getFailureCause());
+
assertTrue(vertex.getStateTimestamp(ExecutionState.CREATED) > 0);
+
assertTrue(vertex.getStateTimestamp(ExecutionState.CANCELING) > 0);
+
assertTrue(vertex.getStateTimestamp(ExecutionState.CANCELED) > 0);
+ } catch (Exception e) {
+ e.printStackTrace();
+ fail(e.getMessage());
+ }
+ }
+
+ /**
+ * For job manager failure recovery case, the execution may still in
reconciling state because the task manager
+ * does not report its status within duration time. It is no need to
send cancel rpc for such execution with no real
+ * attempt id and slot. And it can be transition to canceled state
directly, the same with the cases of scheduled or created.
+ */
+ @Test
+ public void testCancelFromReconcilingNoSlot() {
+ try {
--- End diff --
We are trying to avoid this pattern now (we used it in the earlier days).
It is better for logging and debugging to simply declare `throws Exception`
on the test method.
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