Uses of Class org.apache.hadoop.mapreduce.Counter (Hadoop 0.20.2-cdh3u5 API)
Date: 2012-10-05

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## Uses of Class
org.apache.hadoop.mapreduce.Counter

Packages that use Counter
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 |

Uses of Counter in org.apache.hadoop.mapred

Subclasses of Counter in org.apache.hadoop.mapred
`static class` | `Counters.Counter` A counter record, comprising its name and value.

Methods in org.apache.hadoop.mapred with parameters of type Counter
`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)`

Uses of Counter in org.apache.hadoop.mapreduce

Methods in org.apache.hadoop.mapreduce that return Counter
`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)`
`Counter` | `TaskInputOutputContext.getCounter(Enum<?> counterName)`
`abstract Counter` | `StatusReporter.getCounter(Enum<?> name)`
`Counter` | `TaskInputOutputContext.getCounter(String groupName, String counterName)`
`abstract Counter` | `StatusReporter.getCounter(String group, String name)`

Methods in org.apache.hadoop.mapreduce that return types with arguments of type Counter
`Iterator<Counter>` | `CounterGroup.iterator()`

Constructors in org.apache.hadoop.mapreduce with parameters of type Counter
`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)`

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