Uses of Interface
org.apache.hadoop.mapreduce.TaskAttemptContext

Packages that use TaskAttemptContext

Package	Description
org.apache.hadoop.mapred
org.apache.hadoop.mapred.lib
org.apache.hadoop.mapreduce
org.apache.hadoop.mapreduce.lib.db
org.apache.hadoop.mapreduce.lib.input
org.apache.hadoop.mapreduce.lib.join
org.apache.hadoop.mapreduce.lib.output

Uses of TaskAttemptContext in org.apache.hadoop.mapred

Subinterfaces of TaskAttemptContext in org.apache.hadoop.mapred

Modifier and Type	Interface and Description
interface	TaskAttemptContext

Methods in org.apache.hadoop.mapred with parameters of type TaskAttemptContext

Modifier and Type	Method and Description
void	OutputCommitter.abortTask(TaskAttemptContext taskContext) This method implements the new interface by calling the old method.
void	OutputCommitter.commitTask(TaskAttemptContext taskContext) This method implements the new interface by calling the old method.
boolean	OutputCommitter.needsTaskCommit(TaskAttemptContext taskContext) This method implements the new interface by calling the old method.
void	OutputCommitter.recoverTask(TaskAttemptContext taskContext) This method implements the new interface by calling the old method.
void	OutputCommitter.setupTask(TaskAttemptContext taskContext) This method implements the new interface by calling the old method.

Uses of TaskAttemptContext in org.apache.hadoop.mapred.lib

Methods in org.apache.hadoop.mapred.lib with parameters of type TaskAttemptContext

Modifier and Type	Method and Description
RecordReader<K,V>	CombineFileInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context)

Uses of TaskAttemptContext in org.apache.hadoop.mapreduce

Subinterfaces of TaskAttemptContext in org.apache.hadoop.mapreduce

Modifier and Type	Interface and Description
interface	MapContext<KEYIN,VALUEIN,KEYOUT,VALUEOUT> The context that is given to the Mapper.
interface	ReduceContext<KEYIN,VALUEIN,KEYOUT,VALUEOUT> The context passed to the Reducer.
interface	TaskInputOutputContext<KEYIN,VALUEIN,KEYOUT,VALUEOUT> A context object that allows input and output from the task.

Methods in org.apache.hadoop.mapreduce with parameters of type TaskAttemptContext

Modifier and Type	Method and Description
abstract void	OutputCommitter.abortTask(TaskAttemptContext taskContext) Discard the task output.
abstract void	RecordWriter.close(TaskAttemptContext context) Close this RecordWriter to future operations.
abstract void	OutputCommitter.commitTask(TaskAttemptContext taskContext) To promote the task's temporary output to final output location.
abstract RecordReader<K,V>	InputFormat.createRecordReader(InputSplit split, TaskAttemptContext context) Create a record reader for a given split.
abstract OutputCommitter	OutputFormat.getOutputCommitter(TaskAttemptContext context) Get the output committer for this output format.
abstract RecordWriter<K,V>	OutputFormat.getRecordWriter(TaskAttemptContext context) Get the RecordWriter for the given task.
abstract void	RecordReader.initialize(InputSplit split, TaskAttemptContext context) Called once at initialization.
abstract boolean	OutputCommitter.needsTaskCommit(TaskAttemptContext taskContext) Check whether task needs a commit.
void	OutputCommitter.recoverTask(TaskAttemptContext taskContext) Recover the task output.
abstract void	OutputCommitter.setupTask(TaskAttemptContext taskContext) Sets up output for the task.

Uses of TaskAttemptContext in org.apache.hadoop.mapreduce.lib.db

Methods in org.apache.hadoop.mapreduce.lib.db with parameters of type TaskAttemptContext

Modifier and Type	Method and Description
RecordReader<LongWritable,T>	DBInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context) Create a record reader for a given split.
OutputCommitter	DBOutputFormat.getOutputCommitter(TaskAttemptContext context)
RecordWriter<K,V>	DBOutputFormat.getRecordWriter(TaskAttemptContext context) Get the RecordWriter for the given task.
void	DBRecordReader.initialize(InputSplit split, TaskAttemptContext context)

Uses of TaskAttemptContext in org.apache.hadoop.mapreduce.lib.input

Fields in org.apache.hadoop.mapreduce.lib.input declared as TaskAttemptContext

Modifier and Type	Field and Description
protected TaskAttemptContext	CombineFileRecordReader.context

Methods in org.apache.hadoop.mapreduce.lib.input with parameters of type TaskAttemptContext

Modifier and Type	Method and Description
RecordReader<BytesWritable,BytesWritable>	SequenceFileAsBinaryInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context)
RecordReader<LongWritable,Text>	NLineInputFormat.createRecordReader(InputSplit genericSplit, TaskAttemptContext context)
RecordReader<K,V>	SequenceFileInputFilter.createRecordReader(InputSplit split, TaskAttemptContext context) Create a record reader for the given split
abstract RecordReader<K,V>	CombineFileInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context) This is not implemented yet.
RecordReader<K,V>	SequenceFileInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context)
RecordReader<Text,Text>	KeyValueTextInputFormat.createRecordReader(InputSplit genericSplit, TaskAttemptContext context)
RecordReader<LongWritable,BytesWritable>	FixedLengthInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context)
RecordReader<K,V>	CombineSequenceFileInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context)
RecordReader<Text,Text>	SequenceFileAsTextInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context)
RecordReader<LongWritable,Text>	TextInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context)
RecordReader<LongWritable,Text>	CombineTextInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context)
void	CombineFileRecordReaderWrapper.initialize(InputSplit split, TaskAttemptContext context)
void	SequenceFileRecordReader.initialize(InputSplit split, TaskAttemptContext context)
void	CombineFileRecordReader.initialize(InputSplit split, TaskAttemptContext context)
void	SequenceFileAsTextRecordReader.initialize(InputSplit split, TaskAttemptContext context)
void	KeyValueLineRecordReader.initialize(InputSplit genericSplit, TaskAttemptContext context)

Constructors in org.apache.hadoop.mapreduce.lib.input with parameters of type TaskAttemptContext

Constructor and Description
CombineFileRecordReader(CombineFileSplit split, TaskAttemptContext context, Class<? extends RecordReader<K,V>> rrClass) A generic RecordReader that can hand out different recordReaders for each chunk in the CombineFileSplit.
CombineFileRecordReaderWrapper(FileInputFormat<K,V> inputFormat, CombineFileSplit split, TaskAttemptContext context, Integer idx)

Uses of TaskAttemptContext in org.apache.hadoop.mapreduce.lib.join

Methods in org.apache.hadoop.mapreduce.lib.join with parameters of type TaskAttemptContext

Modifier and Type	Method and Description
RecordReader<K,TupleWritable>	CompositeInputFormat.createRecordReader(InputSplit split, TaskAttemptContext taskContext) Construct a CompositeRecordReader for the children of this InputFormat as defined in the init expression.
abstract ComposableRecordReader<K,V>	ComposableInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context)
void	WrappedRecordReader.initialize(InputSplit split, TaskAttemptContext context)
void	MultiFilterRecordReader.initialize(InputSplit split, TaskAttemptContext context)
void	CompositeRecordReader.initialize(InputSplit split, TaskAttemptContext context)

Uses of TaskAttemptContext in org.apache.hadoop.mapreduce.lib.output

Methods in org.apache.hadoop.mapreduce.lib.output with parameters of type TaskAttemptContext

Modifier and Type	Method and Description
void	FileOutputCommitter.abortTask(TaskAttemptContext context) Delete the work directory
void	PartialOutputCommitter.cleanUpPartialOutputForTask(TaskAttemptContext context) Remove all previously committed outputs from prior executions of this task.
void	PartialFileOutputCommitter.cleanUpPartialOutputForTask(TaskAttemptContext context)
void	FileOutputCommitter.commitTask(TaskAttemptContext context) Move the files from the work directory to the job output directory
protected Path	FileOutputCommitter.getCommittedTaskPath(int appAttemptId, TaskAttemptContext context) Compute the path where the output of a committed task is stored until the entire job is committed for a specific application attempt.
Path	PartialFileOutputCommitter.getCommittedTaskPath(int appAttemptId, TaskAttemptContext context)
Path	FileOutputCommitter.getCommittedTaskPath(TaskAttemptContext context) Compute the path where the output of a committed task is stored until the entire job is committed.
static Path	FileOutputCommitter.getCommittedTaskPath(TaskAttemptContext context, Path out)
Path	FileOutputFormat.getDefaultWorkFile(TaskAttemptContext context, String extension) Get the default path and filename for the output format.
OutputCommitter	LazyOutputFormat.getOutputCommitter(TaskAttemptContext context)
OutputCommitter	FilterOutputFormat.getOutputCommitter(TaskAttemptContext context)
OutputCommitter	NullOutputFormat.getOutputCommitter(TaskAttemptContext context)
OutputCommitter	FileOutputFormat.getOutputCommitter(TaskAttemptContext context)
RecordWriter<WritableComparable<?>,Writable>	MapFileOutputFormat.getRecordWriter(TaskAttemptContext context)
RecordWriter<K,V>	SequenceFileOutputFormat.getRecordWriter(TaskAttemptContext context)
RecordWriter<K,V>	LazyOutputFormat.getRecordWriter(TaskAttemptContext context)
RecordWriter<K,V>	FilterOutputFormat.getRecordWriter(TaskAttemptContext context)
RecordWriter<BytesWritable,BytesWritable>	SequenceFileAsBinaryOutputFormat.getRecordWriter(TaskAttemptContext context)
RecordWriter<K,V>	TextOutputFormat.getRecordWriter(TaskAttemptContext job)
RecordWriter<K,V>	NullOutputFormat.getRecordWriter(TaskAttemptContext context)
abstract RecordWriter<K,V>	FileOutputFormat.getRecordWriter(TaskAttemptContext job)
protected org.apache.hadoop.io.SequenceFile.Writer	SequenceFileOutputFormat.getSequenceWriter(TaskAttemptContext context, Class<?> keyClass, Class<?> valueClass)
Path	FileOutputCommitter.getTaskAttemptPath(TaskAttemptContext context) Compute the path where the output of a task attempt is stored until that task is committed.
static Path	FileOutputCommitter.getTaskAttemptPath(TaskAttemptContext context, Path out) Compute the path where the output of a task attempt is stored until that task is committed.
static String	FileOutputFormat.getUniqueFile(TaskAttemptContext context, String name, String extension) Generate a unique filename, based on the task id, name, and extension
boolean	FileOutputCommitter.needsTaskCommit(TaskAttemptContext context) Did this task write any files in the work directory?
void	FileOutputCommitter.recoverTask(TaskAttemptContext context)
void	FileOutputCommitter.setupTask(TaskAttemptContext context) No task setup required.

Constructors in org.apache.hadoop.mapreduce.lib.output with parameters of type TaskAttemptContext

Constructor and Description
FileOutputCommitter(Path outputPath, TaskAttemptContext context) Create a file output committer
PartialFileOutputCommitter(Path outputPath, TaskAttemptContext context)
PathOutputCommitter(Path outputPath, TaskAttemptContext context) Constructor for a task attempt.