类 org.apache.hadoop.mapreduce.OutputCommitter
的使用

使用OutputCommitter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.mapreduce
org.apache.hadoop.mapreduce.lib.db
org.apache.hadoop.mapreduce.lib.output
org.apache.hadoop.tools.distcp2.mapred

org.apache.hadoop.mapred中OutputCommitter的使用

org.apache.hadoop.mapred中OutputCommitter的子类

限定符和类型	类和说明
class	OutputCommitter OutputCommitter describes the commit of task output for a Map-Reduce job.

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

限定符和类型	字段和说明
protected OutputCommitter	Task.committer

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

限定符和类型	方法和说明
protected static <INKEY,INVALUE,OUTKEY,OUTVALUE> Reducer.Context	Task.createReduceContext(Reducer<INKEY,INVALUE,OUTKEY,OUTVALUE> reducer, Configuration job, TaskAttemptID taskId, RawKeyValueIterator rIter, Counter inputKeyCounter, Counter inputValueCounter, RecordWriter<OUTKEY,OUTVALUE> output, OutputCommitter committer, StatusReporter reporter, RawComparator<INKEY> comparator, Class<INKEY> keyClass, Class<INVALUE> valueClass)

org.apache.hadoop.mapreduce中OutputCommitter的使用

返回OutputCommitter的org.apache.hadoop.mapreduce中的方法

限定符和类型	方法和说明
OutputCommitter	TaskInputOutputContext.getOutputCommitter()
abstract OutputCommitter	OutputFormat.getOutputCommitter(TaskAttemptContext context) Get the output committer for this output format.

参数类型为OutputCommitter的org.apache.hadoop.mapreduce中的构造器

构造器和说明
MapContext(Configuration conf, TaskAttemptID taskid, RecordReader<KEYIN,VALUEIN> reader, RecordWriter<KEYOUT,VALUEOUT> writer, OutputCommitter committer, StatusReporter reporter, InputSplit split)
Mapper.Context(Configuration conf, TaskAttemptID taskid, RecordReader<KEYIN,VALUEIN> reader, RecordWriter<KEYOUT,VALUEOUT> writer, OutputCommitter committer, StatusReporter reporter, InputSplit split)
ReduceContext(Configuration conf, TaskAttemptID taskid, RawKeyValueIterator input, Counter inputKeyCounter, Counter inputValueCounter, RecordWriter<KEYOUT,VALUEOUT> output, OutputCommitter committer, StatusReporter reporter, RawComparator<KEYIN> comparator, Class<KEYIN> keyClass, Class<VALUEIN> valueClass)
Reducer.Context(Configuration conf, TaskAttemptID taskid, RawKeyValueIterator input, Counter inputKeyCounter, Counter inputValueCounter, RecordWriter<KEYOUT,VALUEOUT> output, OutputCommitter committer, StatusReporter reporter, RawComparator<KEYIN> comparator, Class<KEYIN> keyClass, Class<VALUEIN> valueClass)
TaskInputOutputContext(Configuration conf, TaskAttemptID taskid, RecordWriter<KEYOUT,VALUEOUT> output, OutputCommitter committer, StatusReporter reporter)

org.apache.hadoop.mapreduce.lib.db中OutputCommitter的使用

返回OutputCommitter的org.apache.hadoop.mapreduce.lib.db中的方法

限定符和类型	方法和说明
OutputCommitter	DBOutputFormat.getOutputCommitter(TaskAttemptContext context)

org.apache.hadoop.mapreduce.lib.output中OutputCommitter的使用

org.apache.hadoop.mapreduce.lib.output中OutputCommitter的子类

限定符和类型	类和说明
class	FileOutputCommitter An OutputCommitter that commits files specified in job output directory i.e.

返回OutputCommitter的org.apache.hadoop.mapreduce.lib.output中的方法

限定符和类型	方法和说明
OutputCommitter	NullOutputFormat.getOutputCommitter(TaskAttemptContext context)
OutputCommitter	LazyOutputFormat.getOutputCommitter(TaskAttemptContext context)
OutputCommitter	FilterOutputFormat.getOutputCommitter(TaskAttemptContext context)
OutputCommitter	FileOutputFormat.getOutputCommitter(TaskAttemptContext context)

org.apache.hadoop.tools.distcp2.mapred中OutputCommitter的使用

org.apache.hadoop.tools.distcp2.mapred中OutputCommitter的子类

限定符和类型	类和说明
class	CopyCommitter The CopyCommitter class is DistCp's OutputCommitter implementation.

返回OutputCommitter的org.apache.hadoop.tools.distcp2.mapred中的方法

限定符和类型	方法和说明
OutputCommitter	CopyOutputFormat.getOutputCommitter(TaskAttemptContext context)