[
https://issues.apache.org/jira/browse/FLINK-6434?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16236190#comment-16236190
]
ASF GitHub Bot commented on FLINK-6434:
---------------------------------------
Github user tillrohrmann commented on a diff in the pull request:
https://github.com/apache/flink/pull/4937#discussion_r148602423
--- Diff:
flink-runtime/src/test/java/org/apache/flink/runtime/instance/SlotPoolRpcTest.java
---
@@ -99,4 +108,129 @@ public void testSlotAllocationNoResourceManager()
throws Exception {
fail("wrong exception: " + e);
}
}
+
+ @Test
+ public void testCancelSlotAllocation() throws Exception {
+ final JobID jid = new JobID();
+
+ final SlotPool pool = new SlotPool(
+ rpcService, jid,
+ SystemClock.getInstance(),
+ Time.days(1), Time.days(1),
+ Time.seconds(3) // this is the timeout for the
request tested here
+ );
+ pool.start(JobMasterId.generate(), "foobar");
+ SlotPoolGateway slotPoolGateway =
pool.getSelfGateway(SlotPoolGateway.class);
+
+ // 1. test the pending request is in
waitingResourceManagerRequests
+ AllocationID allocationID = new AllocationID();
+ CompletableFuture<SimpleSlot> future =
slotPoolGateway.allocateSlot(allocationID, DEFAULT_TESTING_PROFILE, null,
Time.seconds(1));
+
+ try {
+ future.get(2, TimeUnit.SECONDS);
+ fail("We expected a AskTimeoutException.");
+ }
+ catch (ExecutionException e) {
+ assertEquals(AskTimeoutException.class,
e.getCause().getClass());
+ }
+ catch (Exception e) {
+ fail("wrong exception: " + e);
+ }
+
+ assertEquals(1, pool.getNumOfWaitingForResourceRequests());
+
+ pool.cancelSlotAllocation(allocationID);
+ assertEquals(0, pool.getNumOfWaitingForResourceRequests());
--- End diff --
I think the test could look the following:
```
slotPoolGateway.allocateSlot();
CompletableFuture<Integer> numberPendingRequestsFuture =
slotPoolGateway.requestNumberPendingRequests();
assertEquals(1, numberPendingRequestsFuture.get());
slotPoolGateway.cancelAllocation();
CompletableFuture<Integer> numberPendingRequestsFuture =
slotPoolGateway.requestNumberPendingRequests();
assertEquals(0, numberPendingRequestsFuture.get());
```
> There may be allocatedSlots leak in SlotPool
> --------------------------------------------
>
> Key: FLINK-6434
> URL: https://issues.apache.org/jira/browse/FLINK-6434
> Project: Flink
> Issue Type: Bug
> Components: Cluster Management
> Reporter: shuai.xu
> Assignee: shuai.xu
> Priority: Major
> Labels: flip-6
>
> If the call allocateSlot() from Execution to Slotpool timeout, the job will
> begin to failover, but the pending request are still in SlotPool, if then a
> new slot register to SlotPool, it may be fulfill the outdated pending request
> and be added to allocatedSlots, but it will never be used and will never be
> recycled.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
