ComposableRecordReader (Apache Hadoop Main 3.5.0 API)
Description: declaration: package: org.apache.hadoop.mapreduce.lib.join, class: ComposableRecordReader

Package org.apache.hadoop.mapreduce.lib.join

# Class ComposableRecordReader<K extends WritableComparable<?>,V extends Writable>

java.lang.Object
org.apache.hadoop.mapreduce.RecordReader<K,V>
org.apache.hadoop.mapreduce.lib.join.ComposableRecordReader<K,V>

All Implemented Interfaces:
  `Closeable`, `AutoCloseable`, `Comparable<ComposableRecordReader<K,?>>`

Direct Known Subclasses:
  `CompositeRecordReader`, `WrappedRecordReader`

@Public @Stable public abstract class ComposableRecordReader<K extends WritableComparable<?>,V extends Writable> extends RecordReader<K,V> implements Comparable<ComposableRecordReader<K,?>>
Additional operations required of a RecordReader to participate in a join.

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `ComposableRecordReader()`

- ## Method Summary

  ### Methods inherited from class org.apache.hadoop.mapreduce.RecordReader

  `close, getCurrentKey, getCurrentValue, getProgress, initialize, nextKeyValue`

  ### Methods inherited from class java.lang.Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

  ### Methods inherited from interface java.lang.Comparable

  `compareTo`

- ## Constructor Details

  - ### ComposableRecordReader

    public ComposableRecordReader()