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https://issues.apache.org/jira/browse/YARN-10674?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17299466#comment-17299466
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Peter Bacsko commented on YARN-10674:
-------------------------------------
[~zhuqi] yes that's right.
This is the default setting for policies:
{noformat}
<property>
<description>The list of SchedulingEditPolicy classes that interact with
the scheduler. A particular module may be incompatible with the
scheduler, other policies, or a configuration of either.</description>
<name>yarn.resourcemanager.scheduler.monitor.policies</name>
<value>org.apache.hadoop.yarn.server.resourcemanager.monitor.capacity.ProportionalCapacityPreemptionPolicy</value>
</property>
{noformat}
This is from {{yarn-default.xml}}. So when we don't use preemption, we should
remove this policy.
But we actually have to think a little bit, because how we disable preemption
affects our downstream Hadoop codebase. So let's wait until we figure out what
is the best solution to turn off preemption.
> 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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