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 |
Modifier and Type | Class and Description |
---|---|
static class |
Counters.Counter
Deprecated.
A counter record, comprising its name and value.
|
Modifier and Type | Method and Description |
---|---|
Counter |
Counters.findCounter(Enum<?> key)
Find the counter for the given enum.
|
Counter |
CounterGroup.findCounter(String counterName) |
protected Counter |
CounterGroup.findCounter(String counterName,
String displayName)
Internal to find a counter in a group.
|
Counter |
Counters.findCounter(String groupName,
String counterName) |
abstract Counter |
StatusReporter.getCounter(Enum<?> name) |
Counter |
TaskInputOutputContext.getCounter(Enum<?> counterName) |
abstract Counter |
StatusReporter.getCounter(String group,
String name) |
Counter |
TaskInputOutputContext.getCounter(String groupName,
String counterName) |
Modifier and Type | Method and Description |
---|---|
Iterator<Counter> |
CounterGroup.iterator() |
Constructor and Description |
---|
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) |
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) |
Copyright © 2010 The Apache Software Foundation