diff --git a/hadoop-yarn-project/CHANGES.txt b/hadoop-yarn-project/CHANGES.txt
index 20de1edb7ef..ca9247f13eb 100644
--- a/hadoop-yarn-project/CHANGES.txt
+++ b/hadoop-yarn-project/CHANGES.txt
@@ -217,6 +217,9 @@ Release 2.8.0 - UNRELEASED
YARN-3530. ATS throws exception on trying to filter results without otherinfo.
(zhijie shen via xgong)
+ YARN-2740. Fix NodeLabelsManager to properly handle node label modifications
+ when distributed node label configuration enabled. (Naganarasimha G R via wangda)
+
Release 2.7.1 - UNRELEASED
INCOMPATIBLE CHANGES
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java
index c8f9648147f..4dd01d24bb8 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java
@@ -1779,6 +1779,12 @@ public class YarnConfiguration extends Configuration {
public static final String DEFAULT_NODELABEL_CONFIGURATION_TYPE =
CENTALIZED_NODELABEL_CONFIGURATION_TYPE;
+ @Private
+ public static boolean isDistributedNodeLabelConfiguration(Configuration conf) {
+ return DISTRIBUTED_NODELABEL_CONFIGURATION_TYPE.equals(conf.get(
+ NODELABEL_CONFIGURATION_TYPE, DEFAULT_NODELABEL_CONFIGURATION_TYPE));
+ }
+
public YarnConfiguration() {
super();
}
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/nodelabels/CommonNodeLabelsManager.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/nodelabels/CommonNodeLabelsManager.java
index 7493169201e..f2ff0f62997 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/nodelabels/CommonNodeLabelsManager.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/nodelabels/CommonNodeLabelsManager.java
@@ -97,6 +97,8 @@ public class CommonNodeLabelsManager extends AbstractService {
protected NodeLabelsStore store;
private boolean nodeLabelsEnabled = false;
+ private boolean isDistributedNodeLabelConfiguration = false;
+
/**
* A Host
can have multiple Node
s
*/
@@ -213,6 +215,10 @@ public class CommonNodeLabelsManager extends AbstractService {
nodeLabelsEnabled =
conf.getBoolean(YarnConfiguration.NODE_LABELS_ENABLED,
YarnConfiguration.DEFAULT_NODE_LABELS_ENABLED);
+
+ isDistributedNodeLabelConfiguration =
+ YarnConfiguration.isDistributedNodeLabelConfiguration(conf);
+
if (nodeLabelsEnabled) {
initNodeLabelStore(conf);
}
@@ -223,7 +229,7 @@ public class CommonNodeLabelsManager extends AbstractService {
protected void initNodeLabelStore(Configuration conf) throws Exception {
this.store = new FileSystemNodeLabelsStore(this);
this.store.init(conf);
- this.store.recover();
+ this.store.recover(isDistributedNodeLabelConfiguration);
}
// for UT purpose
@@ -613,7 +619,10 @@ public class CommonNodeLabelsManager extends AbstractService {
}
}
- if (null != dispatcher) {
+ if (null != dispatcher && !isDistributedNodeLabelConfiguration) {
+ // In case of DistributedNodeLabelConfiguration, no need to save the the
+ // NodeLabels Mapping to the back-end store, as on RM restart/failover
+ // NodeLabels are collected from NM through Register/Heartbeat again
dispatcher.getEventHandler().handle(
new UpdateNodeToLabelsMappingsEvent(newNMToLabels));
}
@@ -799,8 +808,10 @@ public class CommonNodeLabelsManager extends AbstractService {
readLock.lock();
List nodeLabels = new ArrayList<>();
for (RMNodeLabel label : labelCollections.values()) {
- nodeLabels.add(NodeLabel.newInstance(label.getLabelName(),
- label.getIsExclusive()));
+ if (!label.getLabelName().equals(NO_LABEL)) {
+ nodeLabels.add(NodeLabel.newInstance(label.getLabelName(),
+ label.getIsExclusive()));
+ }
}
return nodeLabels;
} finally {
@@ -824,7 +835,6 @@ public class CommonNodeLabelsManager extends AbstractService {
readLock.unlock();
}
}
-
private void checkAndThrowLabelName(String label) throws IOException {
if (label == null || label.isEmpty() || label.length() > MAX_LABEL_LENGTH) {
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/nodelabels/FileSystemNodeLabelsStore.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/nodelabels/FileSystemNodeLabelsStore.java
index ea185f2c0a2..f26e2048a02 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/nodelabels/FileSystemNodeLabelsStore.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/nodelabels/FileSystemNodeLabelsStore.java
@@ -154,8 +154,12 @@ public class FileSystemNodeLabelsStore extends NodeLabelsStore {
ensureCloseEditlogFile();
}
+ /* (non-Javadoc)
+ * @see org.apache.hadoop.yarn.nodelabels.NodeLabelsStore#recover(boolean)
+ */
@Override
- public void recover() throws YarnException, IOException {
+ public void recover(boolean ignoreNodeToLabelsMappings) throws YarnException,
+ IOException {
/*
* Steps of recover
* 1) Read from last mirror (from mirror or mirror.old)
@@ -222,7 +226,15 @@ public class FileSystemNodeLabelsStore extends NodeLabelsStore {
new ReplaceLabelsOnNodeRequestPBImpl(
ReplaceLabelsOnNodeRequestProto.parseDelimitedFrom(is))
.getNodeToLabels();
- mgr.replaceLabelsOnNode(map);
+ if (!ignoreNodeToLabelsMappings) {
+ /*
+ * In case of Distributed NodeLabels setup,
+ * ignoreNodeToLabelsMappings will be set to true and recover will
+ * be invoked. As RM will collect the node labels from NM through
+ * registration/HB
+ */
+ mgr.replaceLabelsOnNode(map);
+ }
break;
}
}
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/nodelabels/NodeLabelsStore.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/nodelabels/NodeLabelsStore.java
index 47b7370dff8..46b94fd0d5c 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/nodelabels/NodeLabelsStore.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/nodelabels/NodeLabelsStore.java
@@ -56,9 +56,18 @@ public abstract class NodeLabelsStore implements Closeable {
throws IOException;
/**
- * Recover labels and node to labels mappings from store
+ * Recover labels and node to labels mappings from store, but if
+ * ignoreNodeToLabelsMappings is true then node to labels mappings should not
+ * be recovered. In case of Distributed NodeLabels setup
+ * ignoreNodeToLabelsMappings will be set to true and recover will be invoked
+ * as RM will collect the node labels from NM through registration/HB
+ *
+ * @param ignoreNodeToLabelsMappings
+ * @throws IOException
+ * @throws YarnException
*/
- public abstract void recover() throws IOException, YarnException;
+ public abstract void recover(boolean ignoreNodeToLabelsMappings)
+ throws IOException, YarnException;
public void init(Configuration conf) throws Exception {}
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/nodelabels/DummyCommonNodeLabelsManager.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/nodelabels/DummyCommonNodeLabelsManager.java
index 48d6dc87715..fce663a1c95 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/nodelabels/DummyCommonNodeLabelsManager.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/nodelabels/DummyCommonNodeLabelsManager.java
@@ -39,7 +39,8 @@ public class DummyCommonNodeLabelsManager extends CommonNodeLabelsManager {
this.store = new NodeLabelsStore(this) {
@Override
- public void recover() throws IOException {
+ public void recover(boolean ignoreNodeToLabelsMappings)
+ throws IOException {
}
@Override
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/nodelabels/TestCommonNodeLabelsManager.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/nodelabels/TestCommonNodeLabelsManager.java
index beb2cf85858..09838b43ada 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/nodelabels/TestCommonNodeLabelsManager.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/nodelabels/TestCommonNodeLabelsManager.java
@@ -554,4 +554,29 @@ public class TestCommonNodeLabelsManager extends NodeLabelTestBase {
Assert.assertTrue(expectedAddedLabelNames.contains(label.getName()));
}
}
+
+ @Test(timeout = 5000)
+ public void testReplaceLabelsOnNodeInDistributedMode() throws Exception {
+ //create new DummyCommonNodeLabelsManager than the one got from @before
+ mgr.stop();
+ mgr = new DummyCommonNodeLabelsManager();
+ Configuration conf = new YarnConfiguration();
+ conf.setBoolean(YarnConfiguration.NODE_LABELS_ENABLED, true);
+ conf.set(YarnConfiguration.NODELABEL_CONFIGURATION_TYPE,
+ YarnConfiguration.DISTRIBUTED_NODELABEL_CONFIGURATION_TYPE);
+
+ mgr.init(conf);
+ mgr.start();
+
+ mgr.addToCluserNodeLabelsWithDefaultExclusivity(toSet("p1", "p2", "p3"));
+ mgr.replaceLabelsOnNode(ImmutableMap.of(toNodeId("n1"), toSet("p1")));
+ Set labelsByNode = mgr.getLabelsByNode(toNodeId("n1"));
+
+ Assert.assertNull(
+ "Labels are not expected to be written to the NodeLabelStore",
+ mgr.lastNodeToLabels);
+ Assert.assertNotNull("Updated labels should be available from the Mgr",
+ labelsByNode);
+ Assert.assertTrue(labelsByNode.contains("p1"));
+ }
}
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/nodelabels/TestFileSystemNodeLabelsStore.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/nodelabels/TestFileSystemNodeLabelsStore.java
index f070c205f5a..fb60cd6a642 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/nodelabels/TestFileSystemNodeLabelsStore.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/nodelabels/TestFileSystemNodeLabelsStore.java
@@ -144,6 +144,40 @@ public class TestFileSystemNodeLabelsStore extends NodeLabelTestBase {
mgr.stop();
}
+ @SuppressWarnings({ "unchecked", "rawtypes" })
+ @Test(timeout = 10000)
+ public void testRecoverWithDistributedNodeLabels() throws Exception {
+ mgr.addToCluserNodeLabelsWithDefaultExclusivity(toSet("p1", "p2", "p3"));
+ mgr.addToCluserNodeLabelsWithDefaultExclusivity(toSet("p4"));
+ mgr.addToCluserNodeLabelsWithDefaultExclusivity(toSet("p5", "p6"));
+ mgr.replaceLabelsOnNode((Map) ImmutableMap.of(toNodeId("n1"), toSet("p1"),
+ toNodeId("n2"), toSet("p2")));
+ mgr.replaceLabelsOnNode((Map) ImmutableMap.of(toNodeId("n3"), toSet("p3"),
+ toNodeId("n4"), toSet("p4"), toNodeId("n5"), toSet("p5"),
+ toNodeId("n6"), toSet("p6"), toNodeId("n7"), toSet("p6")));
+
+ mgr.removeFromClusterNodeLabels(toSet("p1"));
+ mgr.removeFromClusterNodeLabels(Arrays.asList("p3", "p5"));
+ mgr.stop();
+
+ mgr = new MockNodeLabelManager();
+ Configuration cf = new Configuration(conf);
+ cf.set(YarnConfiguration.NODELABEL_CONFIGURATION_TYPE,
+ YarnConfiguration.DISTRIBUTED_NODELABEL_CONFIGURATION_TYPE);
+ mgr.init(cf);
+
+ // check variables
+ Assert.assertEquals(3, mgr.getClusterNodeLabels().size());
+ Assert.assertTrue(mgr.getClusterNodeLabelNames().containsAll(
+ Arrays.asList("p2", "p4", "p6")));
+
+ Assert.assertTrue("During recovery in distributed node-labels setup, "
+ + "node to labels mapping should not be recovered ", mgr
+ .getNodeLabels().size() == 0);
+
+ mgr.stop();
+ }
+
@SuppressWarnings({ "unchecked", "rawtypes" })
@Test(timeout = 10000)
public void testEditlogRecover() throws Exception {
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/AdminService.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/AdminService.java
index c921326fbdc..0ad90c0ed4c 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/AdminService.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/AdminService.java
@@ -112,6 +112,9 @@ public class AdminService extends CompositeService implements
private final RecordFactory recordFactory =
RecordFactoryProvider.getRecordFactory(null);
+ @VisibleForTesting
+ boolean isDistributedNodeLabelConfiguration = false;
+
public AdminService(ResourceManager rm, RMContext rmContext) {
super(AdminService.class.getName());
this.rm = rm;
@@ -141,6 +144,10 @@ public class AdminService extends CompositeService implements
YarnConfiguration.DEFAULT_YARN_ADMIN_ACL)), UserGroupInformation
.getCurrentUser());
rmId = conf.get(YarnConfiguration.RM_HA_ID);
+
+ isDistributedNodeLabelConfiguration =
+ YarnConfiguration.isDistributedNodeLabelConfiguration(conf);
+
super.serviceInit(conf);
}
@@ -637,32 +644,35 @@ public class AdminService extends CompositeService implements
@Override
public RemoveFromClusterNodeLabelsResponse removeFromClusterNodeLabels(
RemoveFromClusterNodeLabelsRequest request) throws YarnException, IOException {
- String argName = "removeFromClusterNodeLabels";
+ String operation = "removeFromClusterNodeLabels";
final String msg = "remove labels.";
- UserGroupInformation user = checkAcls(argName);
- checkRMStatus(user.getShortUserName(), argName, msg);
+ UserGroupInformation user = checkAcls(operation);
+
+ checkRMStatus(user.getShortUserName(), operation, msg);
RemoveFromClusterNodeLabelsResponse response =
recordFactory.newRecordInstance(RemoveFromClusterNodeLabelsResponse.class);
try {
rmContext.getNodeLabelManager().removeFromClusterNodeLabels(request.getNodeLabels());
RMAuditLogger
- .logSuccess(user.getShortUserName(), argName, "AdminService");
+ .logSuccess(user.getShortUserName(), operation, "AdminService");
return response;
} catch (IOException ioe) {
- throw logAndWrapException(ioe, user.getShortUserName(), argName, msg);
+ throw logAndWrapException(ioe, user.getShortUserName(), operation, msg);
}
}
@Override
public ReplaceLabelsOnNodeResponse replaceLabelsOnNode(
ReplaceLabelsOnNodeRequest request) throws YarnException, IOException {
- String argName = "replaceLabelsOnNode";
+ String operation = "replaceLabelsOnNode";
final String msg = "set node to labels.";
- UserGroupInformation user = checkAcls(argName);
- checkRMStatus(user.getShortUserName(), argName, msg);
+ checkAndThrowIfDistributedNodeLabelConfEnabled(operation);
+ UserGroupInformation user = checkAcls(operation);
+
+ checkRMStatus(user.getShortUserName(), operation, msg);
ReplaceLabelsOnNodeResponse response =
recordFactory.newRecordInstance(ReplaceLabelsOnNodeResponse.class);
@@ -670,30 +680,41 @@ public class AdminService extends CompositeService implements
rmContext.getNodeLabelManager().replaceLabelsOnNode(
request.getNodeToLabels());
RMAuditLogger
- .logSuccess(user.getShortUserName(), argName, "AdminService");
+ .logSuccess(user.getShortUserName(), operation, "AdminService");
return response;
} catch (IOException ioe) {
- throw logAndWrapException(ioe, user.getShortUserName(), argName, msg);
+ throw logAndWrapException(ioe, user.getShortUserName(), operation, msg);
}
}
- private void checkRMStatus(String user, String argName, String msg)
+ private void checkRMStatus(String user, String operation, String msg)
throws StandbyException {
if (!isRMActive()) {
- RMAuditLogger.logFailure(user, argName, "",
+ RMAuditLogger.logFailure(user, operation, "",
"AdminService", "ResourceManager is not active. Can not " + msg);
throwStandbyException();
}
}
private YarnException logAndWrapException(Exception exception, String user,
- String argName, String msg) throws YarnException {
+ String operation, String msg) throws YarnException {
LOG.warn("Exception " + msg, exception);
- RMAuditLogger.logFailure(user, argName, "",
+ RMAuditLogger.logFailure(user, operation, "",
"AdminService", "Exception " + msg);
return RPCUtil.getRemoteException(exception);
}
+ private void checkAndThrowIfDistributedNodeLabelConfEnabled(String operation)
+ throws YarnException {
+ if (isDistributedNodeLabelConfiguration) {
+ String msg =
+ String.format("Error when invoke method=%s because of "
+ + "distributed node label configuration enabled.", operation);
+ LOG.error(msg);
+ throw RPCUtil.getRemoteException(new IOException(msg));
+ }
+ }
+
@Override
public CheckForDecommissioningNodesResponse checkForDecommissioningNodes(
CheckForDecommissioningNodesRequest checkForDecommissioningNodesRequest)
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ResourceTrackerService.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ResourceTrackerService.java
index 5e2dc7e4f25..16b6a890ac9 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ResourceTrackerService.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ResourceTrackerService.java
@@ -104,7 +104,7 @@ public class ResourceTrackerService extends AbstractService implements
private int minAllocMb;
private int minAllocVcores;
- private boolean isDistributesNodeLabelsConf;
+ private boolean isDistributedNodeLabelsConf;
static {
resync.setNodeAction(NodeAction.RESYNC);
@@ -155,13 +155,8 @@ public class ResourceTrackerService extends AbstractService implements
YarnConfiguration.RM_NODEMANAGER_MINIMUM_VERSION,
YarnConfiguration.DEFAULT_RM_NODEMANAGER_MINIMUM_VERSION);
- String nodeLabelConfigurationType =
- conf.get(YarnConfiguration.NODELABEL_CONFIGURATION_TYPE,
- YarnConfiguration.DEFAULT_NODELABEL_CONFIGURATION_TYPE);
-
- isDistributesNodeLabelsConf =
- YarnConfiguration.DISTRIBUTED_NODELABEL_CONFIGURATION_TYPE
- .equals(nodeLabelConfigurationType);
+ isDistributedNodeLabelsConf =
+ YarnConfiguration.isDistributedNodeLabelConfiguration(conf);
super.serviceInit(conf);
}
@@ -352,7 +347,7 @@ public class ResourceTrackerService extends AbstractService implements
// Update node's labels to RM's NodeLabelManager.
Set nodeLabels = request.getNodeLabels();
- if (isDistributesNodeLabelsConf && nodeLabels != null) {
+ if (isDistributedNodeLabelsConf && nodeLabels != null) {
try {
updateNodeLabelsFromNMReport(nodeLabels, nodeId);
response.setAreNodeLabelsAcceptedByRM(true);
@@ -470,7 +465,7 @@ public class ResourceTrackerService extends AbstractService implements
this.rmContext.getDispatcher().getEventHandler().handle(nodeStatusEvent);
// 5. Update node's labels to RM's NodeLabelManager.
- if (isDistributesNodeLabelsConf && request.getNodeLabels() != null) {
+ if (isDistributedNodeLabelsConf && request.getNodeLabels() != null) {
try {
updateNodeLabelsFromNMReport(request.getNodeLabels(), nodeId);
nodeHeartBeatResponse.setAreNodeLabelsAcceptedByRM(true);
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/RMWebServices.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/RMWebServices.java
index 6cd6d56281f..9aea62d1c84 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/RMWebServices.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/RMWebServices.java
@@ -149,6 +149,7 @@ import org.apache.hadoop.yarn.webapp.BadRequestException;
import org.apache.hadoop.yarn.webapp.NotFoundException;
import org.apache.hadoop.yarn.webapp.util.WebAppUtils;
+import com.google.common.annotations.VisibleForTesting;
import com.google.inject.Inject;
import com.google.inject.Singleton;
@@ -165,6 +166,9 @@ public class RMWebServices {
private final Configuration conf;
private @Context HttpServletResponse response;
+ @VisibleForTesting
+ boolean isDistributedNodeLabelConfiguration = false;
+
public final static String DELEGATION_TOKEN_HEADER =
"Hadoop-YARN-RM-Delegation-Token";
@@ -172,6 +176,19 @@ public class RMWebServices {
public RMWebServices(final ResourceManager rm, Configuration conf) {
this.rm = rm;
this.conf = conf;
+ isDistributedNodeLabelConfiguration =
+ YarnConfiguration.isDistributedNodeLabelConfiguration(conf);
+ }
+
+ private void checkAndThrowIfDistributedNodeLabelConfEnabled(String operation)
+ throws IOException {
+ if (isDistributedNodeLabelConfiguration) {
+ String msg =
+ String.format("Error when invoke method=%s because of "
+ + "distributed node label configuration enabled.", operation);
+ LOG.error(msg);
+ throw new IOException(msg);
+ }
}
RMWebServices(ResourceManager rm, Configuration conf,
@@ -816,38 +833,64 @@ public class RMWebServices {
@POST
@Path("/replace-node-to-labels")
@Produces({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
- public Response replaceLabelsOnNodes(
- final NodeToLabelsInfo newNodeToLabels,
- @Context HttpServletRequest hsr)
- throws IOException {
+ public Response replaceLabelsOnNodes(final NodeToLabelsInfo newNodeToLabels,
+ @Context HttpServletRequest hsr) throws IOException {
+ Map> nodeIdToLabels =
+ new HashMap>();
+
+ for (Map.Entry nitle : newNodeToLabels
+ .getNodeToLabels().entrySet()) {
+ nodeIdToLabels.put(
+ ConverterUtils.toNodeIdWithDefaultPort(nitle.getKey()),
+ new HashSet(nitle.getValue().getNodeLabels()));
+ }
+
+ return replaceLabelsOnNode(nodeIdToLabels, hsr, "/replace-node-to-labels");
+ }
+
+ @POST
+ @Path("/nodes/{nodeId}/replace-labels")
+ @Produces({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
+ public Response replaceLabelsOnNode(NodeLabelsInfo newNodeLabelsInfo,
+ @Context HttpServletRequest hsr, @PathParam("nodeId") String nodeId)
+ throws Exception {
+ NodeId nid = ConverterUtils.toNodeIdWithDefaultPort(nodeId);
+ Map> newLabelsForNode =
+ new HashMap>();
+ newLabelsForNode.put(nid,
+ new HashSet(newNodeLabelsInfo.getNodeLabels()));
+
+ return replaceLabelsOnNode(newLabelsForNode, hsr, "/nodes/nodeid/replace-labels");
+ }
+
+ private Response replaceLabelsOnNode(
+ Map> newLabelsForNode, HttpServletRequest hsr,
+ String operation) throws IOException {
init();
-
+
+ checkAndThrowIfDistributedNodeLabelConfEnabled("replaceLabelsOnNode");
+
UserGroupInformation callerUGI = getCallerUserGroupInformation(hsr, true);
if (callerUGI == null) {
- String msg = "Unable to obtain user name, user not authenticated for"
- + " post to .../replace-node-to-labels";
+ String msg =
+ "Unable to obtain user name, user not authenticated for"
+ + " post to ..." + operation;
throw new AuthorizationException(msg);
}
- if (!rm.getRMContext().getNodeLabelManager().checkAccess(callerUGI)) {
- String msg = "User " + callerUGI.getShortUserName() + " not authorized"
- + " for post to .../replace-node-to-labels ";
- throw new AuthorizationException(msg);
- }
-
- Map> nodeIdToLabels =
- new HashMap>();
- for (Map.Entry nitle :
- newNodeToLabels.getNodeToLabels().entrySet()) {
- nodeIdToLabels.put(ConverterUtils.toNodeIdWithDefaultPort(nitle.getKey()),
- new HashSet(nitle.getValue().getNodeLabels()));
+ if (!rm.getRMContext().getNodeLabelManager().checkAccess(callerUGI)) {
+ String msg =
+ "User " + callerUGI.getShortUserName() + " not authorized"
+ + " for post to ..." + operation;
+ throw new AuthorizationException(msg);
}
-
- rm.getRMContext().getNodeLabelManager().replaceLabelsOnNode(nodeIdToLabels);
+
+ rm.getRMContext().getNodeLabelManager()
+ .replaceLabelsOnNode(newLabelsForNode);
return Response.status(Status.OK).build();
}
-
+
@GET
@Path("/get-node-labels")
@Produces({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
@@ -897,7 +940,7 @@ public class RMWebServices {
@Context HttpServletRequest hsr)
throws Exception {
init();
-
+
UserGroupInformation callerUGI = getCallerUserGroupInformation(hsr, true);
if (callerUGI == null) {
String msg = "Unable to obtain user name, user not authenticated for"
@@ -931,40 +974,6 @@ public class RMWebServices {
rm.getRMContext().getNodeLabelManager().getLabelsOnNode(nid));
}
-
- @POST
- @Path("/nodes/{nodeId}/replace-labels")
- @Produces({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
- public Response replaceLabelsOnNode(NodeLabelsInfo newNodeLabelsInfo,
- @Context HttpServletRequest hsr, @PathParam("nodeId") String nodeId)
- throws Exception {
- init();
-
- UserGroupInformation callerUGI = getCallerUserGroupInformation(hsr, true);
- if (callerUGI == null) {
- String msg = "Unable to obtain user name, user not authenticated for"
- + " post to .../nodes/nodeid/replace-labels";
- throw new AuthorizationException(msg);
- }
-
- if (!rm.getRMContext().getNodeLabelManager().checkAccess(callerUGI)) {
- String msg = "User " + callerUGI.getShortUserName() + " not authorized"
- + " for post to .../nodes/nodeid/replace-labels";
- throw new AuthorizationException(msg);
- }
-
- NodeId nid = ConverterUtils.toNodeIdWithDefaultPort(nodeId);
-
- Map> newLabelsForNode = new HashMap>();
-
- newLabelsForNode.put(nid, new HashSet(newNodeLabelsInfo.getNodeLabels()));
-
- rm.getRMContext().getNodeLabelManager().replaceLabelsOnNode(newLabelsForNode);
-
- return Response.status(Status.OK).build();
-
- }
protected Response killApp(RMApp app, UserGroupInformation callerUGI,
HttpServletRequest hsr) throws IOException, InterruptedException {
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/TestRMAdminService.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/TestRMAdminService.java
index da04c9ec32b..fe0b8a8d1ff 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/TestRMAdminService.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/TestRMAdminService.java
@@ -18,6 +18,7 @@
package org.apache.hadoop.yarn.server.resourcemanager;
+import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
import java.io.DataOutputStream;
@@ -44,6 +45,7 @@ import org.apache.hadoop.security.authorize.AccessControlList;
import org.apache.hadoop.security.authorize.ProxyUsers;
import org.apache.hadoop.security.authorize.ServiceAuthorizationManager;
import org.apache.hadoop.yarn.api.records.DecommissionType;
+import org.apache.hadoop.yarn.api.records.NodeId;
import org.apache.hadoop.yarn.conf.HAUtil;
import org.apache.hadoop.yarn.conf.YarnConfiguration;
import org.apache.hadoop.yarn.exceptions.YarnException;
@@ -53,6 +55,9 @@ import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshQueuesRequest;
import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshServiceAclsRequest;
import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshSuperUserGroupsConfigurationRequest;
import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshUserToGroupsMappingsRequest;
+import org.apache.hadoop.yarn.server.api.protocolrecords.RemoveFromClusterNodeLabelsRequest;
+import org.apache.hadoop.yarn.server.api.protocolrecords.ReplaceLabelsOnNodeRequest;
+import org.apache.hadoop.yarn.server.resourcemanager.nodelabels.RMNodeLabelsManager;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacitySchedulerConfiguration;
import org.junit.After;
@@ -60,6 +65,8 @@ import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
+import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.ImmutableSet;
public class TestRMAdminService {
@@ -754,6 +761,67 @@ public class TestRMAdminService {
}
}
+ @Test
+ public void testModifyLabelsOnNodesWithDistributedConfigurationDisabled()
+ throws IOException, YarnException {
+ // create RM and set it's ACTIVE
+ MockRM rm = new MockRM();
+ ((RMContextImpl) rm.getRMContext())
+ .setHAServiceState(HAServiceState.ACTIVE);
+ RMNodeLabelsManager labelMgr = rm.rmContext.getNodeLabelManager();
+
+ // by default, distributed configuration for node label is disabled, this
+ // should pass
+ labelMgr.addToCluserNodeLabelsWithDefaultExclusivity(ImmutableSet.of("x", "y"));
+ rm.adminService.replaceLabelsOnNode(ReplaceLabelsOnNodeRequest
+ .newInstance(ImmutableMap.of(NodeId.newInstance("host", 0),
+ (Set) ImmutableSet.of("x"))));
+ rm.close();
+ }
+
+ @Test(expected = YarnException.class)
+ public void testModifyLabelsOnNodesWithDistributedConfigurationEnabled()
+ throws IOException, YarnException {
+ // create RM and set it's ACTIVE, and set distributed node label
+ // configuration to true
+ MockRM rm = new MockRM();
+ rm.adminService.isDistributedNodeLabelConfiguration = true;
+
+ ((RMContextImpl) rm.getRMContext())
+ .setHAServiceState(HAServiceState.ACTIVE);
+ RMNodeLabelsManager labelMgr = rm.rmContext.getNodeLabelManager();
+
+ // by default, distributed configuration for node label is disabled, this
+ // should pass
+ labelMgr.addToCluserNodeLabelsWithDefaultExclusivity(ImmutableSet.of("x", "y"));
+ rm.adminService.replaceLabelsOnNode(ReplaceLabelsOnNodeRequest
+ .newInstance(ImmutableMap.of(NodeId.newInstance("host", 0),
+ (Set) ImmutableSet.of("x"))));
+ rm.close();
+ }
+
+ @Test
+ public void testRemoveClusterNodeLabelsWithDistributedConfigurationEnabled()
+ throws IOException, YarnException {
+ // create RM and set it's ACTIVE
+ MockRM rm = new MockRM();
+ ((RMContextImpl) rm.getRMContext())
+ .setHAServiceState(HAServiceState.ACTIVE);
+ RMNodeLabelsManager labelMgr = rm.rmContext.getNodeLabelManager();
+ rm.adminService.isDistributedNodeLabelConfiguration = true;
+
+ // by default, distributed configuration for node label is disabled, this
+ // should pass
+ labelMgr.addToCluserNodeLabelsWithDefaultExclusivity(ImmutableSet.of("x", "y"));
+ rm.adminService
+ .removeFromClusterNodeLabels(RemoveFromClusterNodeLabelsRequest
+ .newInstance((Set) ImmutableSet.of("x")));
+
+ Set clusterNodeLabels = labelMgr.getClusterNodeLabelNames();
+ assertEquals(1,clusterNodeLabels.size());
+ rm.close();
+ }
+
private String writeConfigurationXML(Configuration conf, String confXMLName)
throws IOException {
DataOutputStream output = null;
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/nodelabels/NullRMNodeLabelsManager.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/nodelabels/NullRMNodeLabelsManager.java
index 9548029d087..2e21d261f61 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/nodelabels/NullRMNodeLabelsManager.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/nodelabels/NullRMNodeLabelsManager.java
@@ -40,7 +40,8 @@ public class NullRMNodeLabelsManager extends RMNodeLabelsManager {
this.store = new NodeLabelsStore(this) {
@Override
- public void recover() throws IOException {
+ public void recover(boolean ignoreNodeToLabelsMappings)
+ throws IOException {
// do nothing
}
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/TestRMWebServices.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/TestRMWebServices.java
index 298246ca301..e4614f8c9ec 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/TestRMWebServices.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/TestRMWebServices.java
@@ -51,6 +51,7 @@ import org.apache.hadoop.yarn.server.resourcemanager.ClusterMetrics;
import org.apache.hadoop.yarn.server.resourcemanager.MockRM;
import org.apache.hadoop.yarn.server.resourcemanager.RMContextImpl;
import org.apache.hadoop.yarn.server.resourcemanager.ResourceManager;
+import org.apache.hadoop.yarn.server.resourcemanager.nodelabels.RMNodeLabelsManager;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.QueueMetrics;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.ResourceScheduler;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.fifo.FifoScheduler;
@@ -623,6 +624,7 @@ public class TestRMWebServices extends JerseyTestBase {
null, null, null, null, null);
when(mockRM.getRMContext()).thenReturn(rmContext);
when(mockRM.getClientRMService()).thenReturn(mockClientSvc);
+ rmContext.setNodeLabelManager(mock(RMNodeLabelsManager.class));
RMWebServices webSvc = new RMWebServices(mockRM, new Configuration(),
mock(HttpServletResponse.class));
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/TestRMWebServicesNodeLabels.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/TestRMWebServicesNodeLabels.java
index 40c54a30a6a..2d5518dc03c 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/TestRMWebServicesNodeLabels.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/TestRMWebServicesNodeLabels.java
@@ -19,10 +19,10 @@
package org.apache.hadoop.yarn.server.resourcemanager.webapp;
import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import java.io.IOException;
-import java.io.StringReader;
import java.io.StringWriter;
import javax.ws.rs.core.MediaType;
@@ -51,7 +51,6 @@ import com.sun.jersey.api.client.ClientResponse;
import com.sun.jersey.api.client.WebResource;
import com.sun.jersey.api.json.JSONJAXBContext;
import com.sun.jersey.api.json.JSONMarshaller;
-import com.sun.jersey.api.json.JSONUnmarshaller;
import com.sun.jersey.core.util.MultivaluedMapImpl;
import com.sun.jersey.guice.spi.container.servlet.GuiceContainer;
import com.sun.jersey.test.framework.WebAppDescriptor;
@@ -66,13 +65,13 @@ public class TestRMWebServicesNodeLabels extends JerseyTestBase {
private String userName;
private String notUserName;
+ private RMWebServices rmWebService;
private Injector injector = Guice.createInjector(new ServletModule() {
+
@Override
protected void configureServlets() {
bind(JAXBContextResolver.class);
- bind(RMWebServices.class);
- bind(GenericExceptionHandler.class);
try {
userName = UserGroupInformation.getCurrentUser().getShortUserName();
} catch (IOException ioe) {
@@ -83,6 +82,9 @@ public class TestRMWebServicesNodeLabels extends JerseyTestBase {
conf = new YarnConfiguration();
conf.set(YarnConfiguration.YARN_ADMIN_ACL, userName);
rm = new MockRM(conf);
+ rmWebService = new RMWebServices(rm,conf);
+ bind(RMWebServices.class).toInstance(rmWebService);
+ bind(GenericExceptionHandler.class);
bind(ResourceManager.class).toInstance(rm);
filter("/*").through(
TestRMWebServicesAppsModification.TestRMCustomAuthFilter.class);
@@ -113,7 +115,6 @@ public class TestRMWebServicesNodeLabels extends JerseyTestBase {
ClientResponse response;
JSONObject json;
JSONArray jarr;
- String responseString;
// Add a label
response =
@@ -386,6 +387,93 @@ public class TestRMWebServicesNodeLabels extends JerseyTestBase {
assertEquals(MediaType.APPLICATION_JSON_TYPE, response.getType());
String res = response.getEntity(String.class);
assertTrue(res.equals("null"));
+
+ // Following test cases are to test replace when distributed node label
+ // configuration is on
+ // Reset for testing : add cluster labels
+ response =
+ r.path("ws")
+ .path("v1")
+ .path("cluster")
+ .path("add-node-labels")
+ .queryParam("user.name", userName)
+ .accept(MediaType.APPLICATION_JSON)
+ .entity("{\"nodeLabels\":[\"x\",\"y\"]}",
+ MediaType.APPLICATION_JSON).post(ClientResponse.class);
+ // Reset for testing : Add labels to a node
+ response =
+ r.path("ws").path("v1").path("cluster").path("nodes").path("nid:0")
+ .path("replace-labels").queryParam("user.name", userName)
+ .accept(MediaType.APPLICATION_JSON)
+ .entity("{\"nodeLabels\": [\"y\"]}", MediaType.APPLICATION_JSON)
+ .post(ClientResponse.class);
+ LOG.info("posted node nodelabel");
+
+ //setting rmWebService for Distributed NodeLabel Configuration
+ rmWebService.isDistributedNodeLabelConfiguration = true;
+
+ // Case1 : Replace labels using node-to-labels
+ ntli = new NodeToLabelsInfo();
+ nli = new NodeLabelsInfo();
+ nli.getNodeLabels().add("x");
+ ntli.getNodeToLabels().put("nid:0", nli);
+ response =
+ r.path("ws")
+ .path("v1")
+ .path("cluster")
+ .path("replace-node-to-labels")
+ .queryParam("user.name", userName)
+ .accept(MediaType.APPLICATION_JSON)
+ .entity(toJson(ntli, NodeToLabelsInfo.class),
+ MediaType.APPLICATION_JSON).post(ClientResponse.class);
+
+ // Verify, using node-to-labels that previous operation has failed
+ response =
+ r.path("ws").path("v1").path("cluster").path("get-node-to-labels")
+ .queryParam("user.name", userName)
+ .accept(MediaType.APPLICATION_JSON).get(ClientResponse.class);
+ assertEquals(MediaType.APPLICATION_JSON_TYPE, response.getType());
+ ntli = response.getEntity(NodeToLabelsInfo.class);
+ nli = ntli.getNodeToLabels().get("nid:0");
+ assertEquals(1, nli.getNodeLabels().size());
+ assertFalse(nli.getNodeLabels().contains("x"));
+
+ // Case2 : failure to Replace labels using replace-labels
+ response =
+ r.path("ws").path("v1").path("cluster").path("nodes").path("nid:0")
+ .path("replace-labels").queryParam("user.name", userName)
+ .accept(MediaType.APPLICATION_JSON)
+ .entity("{\"nodeLabels\": [\"x\"]}", MediaType.APPLICATION_JSON)
+ .post(ClientResponse.class);
+ LOG.info("posted node nodelabel");
+
+ // Verify, using node-to-labels that previous operation has failed
+ response =
+ r.path("ws").path("v1").path("cluster").path("get-node-to-labels")
+ .queryParam("user.name", userName)
+ .accept(MediaType.APPLICATION_JSON).get(ClientResponse.class);
+ assertEquals(MediaType.APPLICATION_JSON_TYPE, response.getType());
+ ntli = response.getEntity(NodeToLabelsInfo.class);
+ nli = ntli.getNodeToLabels().get("nid:0");
+ assertEquals(1, nli.getNodeLabels().size());
+ assertFalse(nli.getNodeLabels().contains("x"));
+
+ // Case3 : Remove cluster label should be successfull
+ response =
+ r.path("ws").path("v1").path("cluster")
+ .path("remove-node-labels")
+ .queryParam("user.name", userName)
+ .accept(MediaType.APPLICATION_JSON)
+ .entity("{\"nodeLabels\":\"x\"}", MediaType.APPLICATION_JSON)
+ .post(ClientResponse.class);
+ // Verify
+ response =
+ r.path("ws").path("v1").path("cluster")
+ .path("get-node-labels").queryParam("user.name", userName)
+ .accept(MediaType.APPLICATION_JSON).get(ClientResponse.class);
+ assertEquals(MediaType.APPLICATION_JSON_TYPE, response.getType());
+ json = response.getEntity(JSONObject.class);
+ assertEquals("y", json.getString("nodeLabels"));
}
@SuppressWarnings("rawtypes")
@@ -396,13 +484,4 @@ public class TestRMWebServicesNodeLabels extends JerseyTestBase {
jm.marshallToJSON(nsli, sw);
return sw.toString();
}
-
- @SuppressWarnings({ "rawtypes", "unchecked" })
- private Object fromJson(String json, Class klass) throws Exception {
- StringReader sr = new StringReader(json);
- JSONJAXBContext ctx = new JSONJAXBContext(klass);
- JSONUnmarshaller jm = ctx.createJSONUnmarshaller();
- return jm.unmarshalFromJSON(sr, klass);
- }
-
}