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HDDS-1822. NPE in SCMCommonPolicy.chooseDatanodes (#1120)

This commit is contained in:
Doroszlai, Attila 2019-07-18 22:28:03 +02:00 committed by Xiaoyu Yao
parent 9838a47d44
commit d5ef38b093
2 changed files with 20 additions and 9 deletions
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4
hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/container/placement/algorithms/SCMCommonPolicy.java
View File

@ -109,7 +109,9 @@ public abstract class SCMCommonPolicy implements ContainerPlacementPolicy {
int nodesRequired, final long sizeRequired) throws SCMException {
List<DatanodeDetails> healthyNodes =
nodeManager.getNodes(HddsProtos.NodeState.HEALTHY);
healthyNodes.removeAll(excludedNodes);
if (excludedNodes != null) {
healthyNodes.removeAll(excludedNodes);
}
String msg;
if (healthyNodes.size() == 0) {
msg = "No healthy node found to allocate container.";

25
hadoop-hdds/server-scm/src/test/java/org/apache/hadoop/hdds/scm/container/placement/algorithms/TestContainerPlacementFactory.java
View File

@ -63,6 +63,13 @@ public class TestContainerPlacementFactory {
public void setup() {
//initialize network topology instance
conf = new OzoneConfiguration();
}
@Test
public void testRackAwarePolicy() throws IOException {
conf.set(ScmConfigKeys.OZONE_SCM_CONTAINER_PLACEMENT_IMPL_KEY,
SCMContainerPlacementRackAware.class.getName());
NodeSchema[] schemas = new NodeSchema[]
{ROOT_SCHEMA, RACK_SCHEMA, LEAF_SCHEMA};
NodeSchemaManager.getInstance().init(schemas, true);
@ -91,11 +98,7 @@ public class TestContainerPlacementFactory {
.thenReturn(new SCMNodeMetric(storageCapacity, 80L, 20L));
when(nodeManager.getNodeStat(datanodes.get(4)))
.thenReturn(new SCMNodeMetric(storageCapacity, 70L, 30L));
}
@Test
public void testDefaultPolicy() throws IOException {
ContainerPlacementPolicy policy = ContainerPlacementPolicyFactory
.getPolicy(conf, nodeManager, cluster, true);
@ -111,14 +114,21 @@ public class TestContainerPlacementFactory {
datanodeDetails.get(2)));
}
@Test
public void testDefaultPolicy() throws IOException {
ContainerPlacementPolicy policy = ContainerPlacementPolicyFactory
.getPolicy(conf, null, null, true);
Assert.assertSame(SCMContainerPlacementRandom.class, policy.getClass());
}
/**
* A dummy container placement implementation for test.
*/
public class DummyImpl implements ContainerPlacementPolicy {
public static class DummyImpl implements ContainerPlacementPolicy {
@Override
public List<DatanodeDetails> chooseDatanodes(
List<DatanodeDetails> excludedNodes, List<DatanodeDetails> favoredNodes,
int nodesRequired, long sizeRequired) throws IOException {
int nodesRequired, long sizeRequired) {
return null;
}
}
@ -127,8 +137,7 @@ public class TestContainerPlacementFactory {
public void testConstuctorNotFound() throws SCMException {
// set a placement class which does't have the right constructor implemented
conf.set(ScmConfigKeys.OZONE_SCM_CONTAINER_PLACEMENT_IMPL_KEY,
"org.apache.hadoop.hdds.scm.container.placement.algorithms." +
"TestContainerPlacementFactory$DummyImpl");
DummyImpl.class.getName());
ContainerPlacementPolicyFactory.getPolicy(conf, null, null, true);
}