Package | Description |
---|---|
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.map | |
org.apache.hadoop.mapreduce.lib.reduce | |
org.apache.hadoop.mapreduce.task |
Modifier and Type | Class and Description |
---|---|
class |
TaskAttemptID
TaskAttemptID represents the immutable and unique identifier for
a task attempt.
|
Modifier and Type | Method and Description |
---|---|
protected static <INKEY,INVALUE,OUTKEY,OUTVALUE> |
Task.createReduceContext(Reducer<INKEY,INVALUE,OUTKEY,OUTVALUE> reducer,
org.apache.hadoop.conf.Configuration job,
TaskAttemptID taskId,
RawKeyValueIterator rIter,
Counter inputKeyCounter,
Counter inputValueCounter,
RecordWriter<OUTKEY,OUTVALUE> output,
OutputCommitter committer,
StatusReporter reporter,
org.apache.hadoop.io.RawComparator<INKEY> comparator,
java.lang.Class<INKEY> keyClass,
java.lang.Class<INVALUE> valueClass) |
static TaskAttemptID |
TaskAttemptID.downgrade(TaskAttemptID old)
Downgrade a new TaskAttemptID to an old one
|
Modifier and Type | Method and Description |
---|---|
static TaskAttemptID |
TaskAttemptID.forName(java.lang.String str)
Construct a TaskAttemptID object from given string
|
TaskAttemptID |
TaskAttemptContext.getTaskAttemptID()
Get the unique name for this task attempt.
|
Modifier and Type | Method and Description |
---|---|
void |
Job.failTask(TaskAttemptID taskId)
Fail indicated task attempt.
|
void |
Job.killTask(TaskAttemptID taskId)
Kill indicated task attempt.
|
Modifier and Type | Method and Description |
---|---|
TaskAttemptID |
WrappedMapper.Context.getTaskAttemptID() |
Modifier and Type | Method and Description |
---|---|
TaskAttemptID |
WrappedReducer.Context.getTaskAttemptID() |
Modifier and Type | Method and Description |
---|---|
TaskAttemptID |
TaskAttemptContextImpl.getTaskAttemptID()
Get the unique name for this task attempt.
|
Constructor and Description |
---|
MapContextImpl(org.apache.hadoop.conf.Configuration conf,
TaskAttemptID taskid,
RecordReader<KEYIN,VALUEIN> reader,
RecordWriter<KEYOUT,VALUEOUT> writer,
OutputCommitter committer,
StatusReporter reporter,
InputSplit split) |
ReduceContextImpl(org.apache.hadoop.conf.Configuration conf,
TaskAttemptID taskid,
RawKeyValueIterator input,
Counter inputKeyCounter,
Counter inputValueCounter,
RecordWriter<KEYOUT,VALUEOUT> output,
OutputCommitter committer,
StatusReporter reporter,
org.apache.hadoop.io.RawComparator<KEYIN> comparator,
java.lang.Class<KEYIN> keyClass,
java.lang.Class<VALUEIN> valueClass) |
TaskAttemptContextImpl(org.apache.hadoop.conf.Configuration conf,
TaskAttemptID taskId) |
TaskAttemptContextImpl(org.apache.hadoop.conf.Configuration conf,
TaskAttemptID taskId,
StatusReporter reporter) |
TaskInputOutputContextImpl(org.apache.hadoop.conf.Configuration conf,
TaskAttemptID taskid,
RecordWriter<KEYOUT,VALUEOUT> output,
OutputCommitter committer,
StatusReporter reporter) |
Copyright © 2009 The Apache Software Foundation