[
https://issues.apache.org/jira/browse/FLINK-9190?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16447282#comment-16447282
]
ASF GitHub Bot commented on FLINK-9190:
---------------------------------------
Github user GJL commented on a diff in the pull request:
https://github.com/apache/flink/pull/5881#discussion_r183243246
--- Diff:
flink-yarn/src/test/java/org/apache/flink/yarn/YarnResourceManagerTest.java ---
@@ -388,4 +390,108 @@ public void testStopWorker() throws Exception {
assertTrue(resourceManager.getNumberOfRegisteredTaskManagers().get() == 0);
}};
}
+
+ /**
+ * Tests the case that containers are killed before registering with
ResourceManager successfully.
+ */
+ @Test
+ public void testKillContainerBeforeTMRegisterSuccessfully() throws
Exception {
--- End diff --
I would drop this test because it is too complicated, uses internal hadoop
APIs, and heavily relies on mocking. What do you think?
> YarnResourceManager sometimes does not request new Containers
> -------------------------------------------------------------
>
> Key: FLINK-9190
> URL: https://issues.apache.org/jira/browse/FLINK-9190
> Project: Flink
> Issue Type: Bug
> Components: Distributed Coordination, YARN
> Affects Versions: 1.5.0
> Environment: Hadoop 2.8.3
> ZooKeeper 3.4.5
> Flink 71c3cd2781d36e0a03d022a38cc4503d343f7ff8
> Reporter: Gary Yao
> Assignee: Sihua Zhou
> Priority: Blocker
> Labels: flip-6
> Fix For: 1.5.0
>
> Attachments: yarn-logs
>
>
> *Description*
> The {{YarnResourceManager}} does not request new containers if
> {{TaskManagers}} are killed rapidly in succession. After 5 minutes the job is
> restarted due to {{NoResourceAvailableException}}, and the job runs normally
> afterwards. I suspect that {{TaskManager}} failures are not registered if the
> failure occurs before the {{TaskManager}} registers with the master. Logs are
> attached; I added additional log statements to
> {{YarnResourceManager.onContainersCompleted}} and
> {{YarnResourceManager.onContainersAllocated}}.
> *Expected Behavior*
> The {{YarnResourceManager}} should recognize that the container is completed
> and keep requesting new containers. The job should run as soon as resources
> are available.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
