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https://issues.apache.org/jira/browse/FLINK-9190?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16607348#comment-16607348
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ASF GitHub Bot commented on FLINK-9190:
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tillrohrmann commented on issue #5931: [FLINK-9190][flip6,yarn] Request new
container if container completed unexpectedly
URL: https://github.com/apache/flink/pull/5931#issuecomment-419500186
Yes at the moment, this could happen. However, the superfluous `TaskManager`
should be released after it idled around for too long. Moreover, I'm currently
working on making the `SlotManager` aware of how many outstanding slots he has
requested. That way he should not allocate additional containers in case of a
failover of the `ExecutionGraph`.
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> 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: Gary Yao
> Priority: Blocker
> Labels: flip-6, pull-request-available
> 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.
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