类 org.apache.hadoop.mapred.TaskAttemptContext
的使用

使用TaskAttemptContext的程序包

程序包	说明
org.apache.hadoop.mapred	A software framework for easily writing applications which process vast amounts of data (multi-terabyte data-sets) parallelly on large clusters (thousands of nodes) built of commodity hardware in a reliable, fault-tolerant manner.

org.apache.hadoop.mapred中TaskAttemptContext的使用

声明为TaskAttemptContext的org.apache.hadoop.mapred中的字段

限定符和类型	字段和说明
protected TaskAttemptContext	Task.taskContext

参数类型为TaskAttemptContext的org.apache.hadoop.mapred中的方法

限定符和类型	方法和说明
abstract void	OutputCommitter.abortTask(TaskAttemptContext taskContext) Discard the task output
void	FileOutputCommitter.abortTask(TaskAttemptContext context)
abstract void	OutputCommitter.commitTask(TaskAttemptContext taskContext) To promote the task's temporary output to final output location The task's output is moved to the job's output directory.
void	FileOutputCommitter.commitTask(TaskAttemptContext context)
abstract boolean	OutputCommitter.needsTaskCommit(TaskAttemptContext taskContext) Check whether task needs a commit
boolean	FileOutputCommitter.needsTaskCommit(TaskAttemptContext context)
abstract void	OutputCommitter.setupTask(TaskAttemptContext taskContext) Sets up output for the task.
void	FileOutputCommitter.setupTask(TaskAttemptContext context)