[
https://issues.apache.org/jira/browse/YARN-5829?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15926641#comment-15926641
]
ASF GitHub Bot commented on YARN-5829:
--------------------------------------
Github user szegedim commented on a diff in the pull request:
https://github.com/apache/hadoop/pull/201#discussion_r106237085
--- Diff:
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/FSSchedulerNode.java
---
@@ -18,30 +18,52 @@
package org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair;
+import com.google.common.annotations.VisibleForTesting;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.classification.InterfaceAudience.Private;
import org.apache.hadoop.classification.InterfaceStability.Unstable;
import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
+import org.apache.hadoop.yarn.api.records.ContainerId;
+import org.apache.hadoop.yarn.api.records.Resource;
import
org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainer;
import org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNode;
import
org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApplicationAttempt;
import org.apache.hadoop.yarn.server.scheduler.SchedulerRequestKey;
import
org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerNode;
+import org.apache.hadoop.yarn.util.resource.Resources;
import java.util.Collection;
+import java.util.Comparator;
+import java.util.Iterator;
+import java.util.LinkedHashMap;
+import java.util.Map;
import java.util.Set;
-import java.util.concurrent.ConcurrentSkipListSet;
+import java.util.concurrent.ConcurrentSkipListMap;
@Private
@Unstable
public class FSSchedulerNode extends SchedulerNode {
private static final Log LOG = LogFactory.getLog(FSSchedulerNode.class);
-
+ private static final Comparator<RMContainer> comparator =
--- End diff --
java.lang.ClassCastException:
org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainer$$EnhancerByMockitoWithCGLIB$$4607190f
cannot be cast to java.lang.Comparable
at
java.util.concurrent.ConcurrentSkipListMap.cpr(ConcurrentSkipListMap.java:655)
at
java.util.concurrent.ConcurrentSkipListMap.doGet(ConcurrentSkipListMap.java:794)
at
java.util.concurrent.ConcurrentSkipListMap.get(ConcurrentSkipListMap.java:1546)
at
org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSSchedulerNode.removeContainerForPreemption(FSSchedulerNode.java:203)
at
org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSSchedulerNode.releaseContainer(FSSchedulerNode.java:230)
at
org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.TestFSSchedulerNode.testPreemptionToCompletedApp(TestFSSchedulerNode.java:302)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
at
com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at
com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:51)
at
com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:237)
at
com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
> FS preemption should reserve a node before considering containers on it for
> preemption
> --------------------------------------------------------------------------------------
>
> Key: YARN-5829
> URL: https://issues.apache.org/jira/browse/YARN-5829
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: fairscheduler
> Reporter: Karthik Kambatla
> Assignee: Miklos Szegedi
>
> FS preemption evaluates nodes for preemption, and subsequently preempts
> identified containers. If this node is not reserved for a specific
> application, any other application could be allocated resources on this node.
> Reserving the node for the starved application before preempting containers
> would help avoid this.
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