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https://issues.apache.org/jira/browse/YARN-10674?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17299427#comment-17299427
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Peter Bacsko commented on YARN-10674:
-------------------------------------
I'll do a deeper review today.
[~gandras] you say: "Is setting observe only necessary here? This is an
extremely subtle property.".
I'm not sure how subtle it is, but it is mentioned in the upstream
documentation:
|{{yarn.resourcemanager.monitor.capacity.preemption.observe_only}}|If true, run
the policy but do not affect the cluster with preemption and kill events.
Default value is false|
However, if someone thinks that disabling preemption for "root" is a better
solution, I'm not against that. We might need other folks to chime in and share
their thoughts.
> fs2cs: should support auto created queue deletion.
> --------------------------------------------------
>
> Key: YARN-10674
> URL: https://issues.apache.org/jira/browse/YARN-10674
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Qi Zhu
> Assignee: Qi Zhu
> Priority: Major
> Labels: fs2cs
> Attachments: YARN-10674.001.patch, YARN-10674.002.patch,
> YARN-10674.003.patch, YARN-10674.004.patch, YARN-10674.005.patch,
> YARN-10674.006.patch
>
>
> In FS the auto deletion check interval is 10s.
> {code:java}
> @Override
> public void onCheck() {
> queueMgr.removeEmptyDynamicQueues();
> queueMgr.removePendingIncompatibleQueues();
> }
> while (running) {
> try {
> synchronized (this) {
> reloadListener.onCheck();
> }
> ...
> Thread.sleep(reloadIntervalMs);
> }
> /** Time to wait between checks of the allocation file */
> public static final long ALLOC_RELOAD_INTERVAL_MS = 10 * 1000;{code}
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