HashTable.TableHash.Reader (Apache HBase 1.2.12 API)

java.lang.Object
- org.apache.hadoop.hbase.mapreduce.HashTable.TableHash.Reader

All Implemented Interfaces:

Closeable, AutoCloseable

Enclosing class:

HashTable.TableHash
```
public class HashTable.TableHash.Reader
extends Object
implements Closeable
```

Field Summary

Fields
Modifier and Type	Field and Description
`private boolean`	`cachedNext`
`private org.apache.hadoop.conf.Configuration`	`conf`
`private ImmutableBytesWritable`	`hash`
`private int`	`hashFileIndex`
`private ImmutableBytesWritable`	`key`
`private org.apache.hadoop.io.MapFile.Reader`	`mapFileReader`

Constructor Summary

Constructors
Constructor and Description

HashTable.TableHash.Reader(org.apache.hadoop.conf.Configuration conf, ImmutableBytesWritable startKey)

Constructors
Constructor and Description
`HashTable.TableHash.Reader(org.apache.hadoop.conf.Configuration conf, ImmutableBytesWritable startKey)`

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`close()`
`ImmutableBytesWritable`	`getCurrentHash()` Get the current hash
`ImmutableBytesWritable`	`getCurrentKey()` Get the current key
`boolean`	`next()` Read the next key/hash pair.
`private void`	`openHashFile()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

conf

private final org.apache.hadoop.conf.Configuration conf

hashFileIndex
```
private int hashFileIndex
```

mapFileReader

private org.apache.hadoop.io.MapFile.Reader mapFileReader

cachedNext
```
private boolean cachedNext
```

key
```
private ImmutableBytesWritable key
```

hash
```
private ImmutableBytesWritable hash
```

Constructor Detail

HashTable.TableHash.Reader

HashTable.TableHash.Reader(org.apache.hadoop.conf.Configuration conf,
                          ImmutableBytesWritable startKey)
                     throws IOException

Throws:: IOException

Method Detail
- next
```
public boolean next()
             throws IOException
```
  Read the next key/hash pair. Returns true if such a pair exists and false when at the end of the data.
  
  Throws:
  
  IOException
- getCurrentKey
```
public ImmutableBytesWritable getCurrentKey()
```
  Get the current key
  
  Returns:
  the current key or null if there is no current key
- getCurrentHash
```
public ImmutableBytesWritable getCurrentHash()
```
  Get the current hash
  
  Returns:
  the current hash or null if there is no current hash
- openHashFile
```
private void openHashFile()
                   throws IOException
```
  Throws:
  
  IOException
- close
```
public void close()
           throws IOException
```
  Specified by:
  
  close in interface Closeable
  
  Specified by:
  
  close in interface AutoCloseable
  
  Throws:
  
  IOException

Class HashTable.TableHash.Reader

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

conf

hashFileIndex

mapFileReader

cachedNext

key

hash

Constructor Detail

HashTable.TableHash.Reader

Method Detail

next

getCurrentKey

getCurrentHash

openHashFile

close