本文整理汇总了Java中org.apache.hadoop.mapred.MapReduceChildJVM.getVMCommand方法的典型用法代码示例。如果您正苦于以下问题：Java MapReduceChildJVM.getVMCommand方法的具体用法？Java MapReduceChildJVM.getVMCommand怎么用？Java MapReduceChildJVM.getVMCommand使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.hadoop.mapred.MapReduceChildJVM的用法示例。
在下文中一共展示了MapReduceChildJVM.getVMCommand方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: createContainerLaunchContext
import org.apache.hadoop.mapred.MapReduceChildJVM; //导入方法依赖的package包/类
static ContainerLaunchContext createContainerLaunchContext(
Map<ApplicationAccessType, String> applicationACLs,
Configuration conf, Token<JobTokenIdentifier> jobToken, Task remoteTask,
final org.apache.hadoop.mapred.JobID oldJobId,
WrappedJvmID jvmID,
TaskAttemptListener taskAttemptListener,
Credentials credentials) {
synchronized (commonContainerSpecLock) {
if (commonContainerSpec == null) {
commonContainerSpec = createCommonContainerLaunchContext(
applicationACLs, conf, jobToken, oldJobId, credentials);
}
}
// Fill in the fields needed per-container that are missing in the common
// spec.
boolean userClassesTakesPrecedence =
conf.getBoolean(MRJobConfig.MAPREDUCE_JOB_USER_CLASSPATH_FIRST, false);
// Setup environment by cloning from common env.
Map<String, String> env = commonContainerSpec.getEnvironment();
Map<String, String> myEnv = new HashMap<String, String>(env.size());
myEnv.putAll(env);
if (userClassesTakesPrecedence) {
myEnv.put(Environment.CLASSPATH_PREPEND_DISTCACHE.name(), "true");
}
MapReduceChildJVM.setVMEnv(myEnv, remoteTask);
// Set up the launch command
List<String> commands = MapReduceChildJVM.getVMCommand(
taskAttemptListener.getAddress(), remoteTask, jvmID);
// Duplicate the ByteBuffers for access by multiple containers.
Map<String, ByteBuffer> myServiceData = new HashMap<String, ByteBuffer>();
for (Entry<String, ByteBuffer> entry : commonContainerSpec
.getServiceData().entrySet()) {
myServiceData.put(entry.getKey(), entry.getValue().duplicate());
}
// Construct the actual Container
ContainerLaunchContext container = ContainerLaunchContext.newInstance(
commonContainerSpec.getLocalResources(), myEnv, commands,
myServiceData, commonContainerSpec.getTokens().duplicate(),
applicationACLs);
return container;
}
示例2: createContainerLaunchContext
import org.apache.hadoop.mapred.MapReduceChildJVM; //导入方法依赖的package包/类
static ContainerLaunchContext createContainerLaunchContext(
Map<ApplicationAccessType, String> applicationACLs,
Configuration conf, Token<JobTokenIdentifier> jobToken, Task remoteTask,
final org.apache.hadoop.mapred.JobID oldJobId,
WrappedJvmID jvmID,
TaskAttemptListener taskAttemptListener,
Credentials credentials) {
synchronized (commonContainerSpecLock) {
if (commonContainerSpec == null) {
commonContainerSpec = createCommonContainerLaunchContext(
applicationACLs, conf, jobToken, oldJobId, credentials);
}
}
// Fill in the fields needed per-container that are missing in the common
// spec.
// Setup environment by cloning from common env.
Map<String, String> env = commonContainerSpec.getEnvironment();
Map<String, String> myEnv = new HashMap<String, String>(env.size());
myEnv.putAll(env);
MapReduceChildJVM.setVMEnv(myEnv, remoteTask);
// Set up the launch command
List<String> commands = MapReduceChildJVM.getVMCommand(
taskAttemptListener.getAddress(), remoteTask, jvmID);
// Duplicate the ByteBuffers for access by multiple containers.
Map<String, ByteBuffer> myServiceData = new HashMap<String, ByteBuffer>();
for (Entry<String, ByteBuffer> entry : commonContainerSpec
.getServiceData().entrySet()) {
myServiceData.put(entry.getKey(), entry.getValue().duplicate());
}
// Construct the actual Container
ContainerLaunchContext container = ContainerLaunchContext.newInstance(
commonContainerSpec.getLocalResources(), myEnv, commands,
myServiceData, commonContainerSpec.getTokens().duplicate(),
applicationACLs);
return container;
}