本文整理汇总了Java中org.apache.hadoop.mapred.JobInProgress.reserveTaskTracker方法的典型用法代码示例。如果您正苦于以下问题：Java JobInProgress.reserveTaskTracker方法的具体用法？Java JobInProgress.reserveTaskTracker怎么用？Java JobInProgress.reserveTaskTracker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.JobInProgress的用法示例。
在下文中一共展示了JobInProgress.reserveTaskTracker方法的1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: reserveSlots
import org.apache.hadoop.mapred.JobInProgress; //导入方法依赖的package包/类
/**
* Reserve specified number of slots for a given <code>job</code>.
* @param taskType {@link TaskType} of the task
* @param job the job for which slots on this <code>TaskTracker</code>
* are to be reserved
* @param numSlots number of slots to be reserved
*/
public void reserveSlots(TaskType taskType, JobInProgress job, int numSlots) {
JobID jobId = job.getJobID();
if (taskType == TaskType.MAP) {
if (jobForFallowMapSlot != null &&
!jobForFallowMapSlot.getJobID().equals(jobId)) {
throw new RuntimeException(trackerName + " already has " +
"slots reserved for " +
jobForFallowMapSlot + "; being" +
" asked to reserve " + numSlots + " for " +
jobId);
}
jobForFallowMapSlot = job;
} else if (taskType == TaskType.REDUCE){
if (jobForFallowReduceSlot != null &&
!jobForFallowReduceSlot.getJobID().equals(jobId)) {
throw new RuntimeException(trackerName + " already has " +
"slots reserved for " +
jobForFallowReduceSlot + "; being" +
" asked to reserve " + numSlots + " for " +
jobId);
}
jobForFallowReduceSlot = job;
}
job.reserveTaskTracker(this, taskType, numSlots);
LOG.info(trackerName + ": Reserved " + numSlots + " " + taskType +
" slots for " + jobId);
}