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https://issues.apache.org/jira/browse/YARN-999?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16813733#comment-16813733
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Steve Loughran commented on YARN-999:
-------------------------------------
I think this has broken the build
{code}
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on
project hadoop-sls: Compilation failure: Compilation failure:
[ERROR]
/Users/stevel/Projects/hadoop-trunk/hadoop-tools/hadoop-sls/src/main/java/org/apache/hadoop/yarn/sls/nodemanager/NodeInfo.java:[60,18]
org.apache.hadoop.yarn.sls.nodemanager.NodeInfo.FakeRMNodeImpl is not abstract
and does not override abstract method resetUpdatedCapability() in
org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNode
[ERROR]
/Users/stevel/Projects/hadoop-trunk/hadoop-tools/hadoop-sls/src/main/java/org/apache/hadoop/yarn/sls/scheduler/RMNodeWrapper.java:[47,8]
org.apache.hadoop.yarn.sls.scheduler.RMNodeWrapper is not abstract and does
not override abstract method resetUpdatedCapability() in
org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNodeI
{code}
Can you fix this ASAP, so we don't have to roll things back.Or change the
modified interface to have some default functions.
> In case of long running tasks, reduce node resource should balloon out
> resource quickly by calling preemption API and suspending running task.
> -----------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: YARN-999
> URL: https://issues.apache.org/jira/browse/YARN-999
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: graceful, nodemanager, scheduler
> Reporter: Junping Du
> Assignee: Íñigo Goiri
> Priority: Major
> Fix For: 3.3.0
>
> Attachments: YARN-291.000.patch, YARN-999.001.patch,
> YARN-999.002.patch, YARN-999.003.patch, YARN-999.004.patch,
> YARN-999.005.patch, YARN-999.006.patch, YARN-999.007.patch,
> YARN-999.008.patch, YARN-999.009.patch, YARN-999.010.patch
>
>
> In current design and implementation, when we decrease resource on node to
> less than resource consumption of current running tasks, tasks can still be
> running until the end. But just no new task get assigned on this node
> (because AvailableResource < 0) until some tasks are finished and
> AvailableResource > 0 again. This is good for most cases but in case of long
> running task, it could be too slow for resource setting to actually work so
> preemption could be used here.
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