TableInputFormat (Apache HBase 1.1.7 API)

java.lang.Object
- org.apache.hadoop.hbase.mapred.TableInputFormatBase
- - org.apache.hadoop.hbase.mapred.TableInputFormat

All Implemented Interfaces:

org.apache.hadoop.mapred.InputFormat<ImmutableBytesWritable,Result>, org.apache.hadoop.mapred.JobConfigurable
```
@InterfaceAudience.Public
@InterfaceStability.Stable
public class TableInputFormat
extends TableInputFormatBase
implements org.apache.hadoop.mapred.JobConfigurable
```
Convert HBase tabular data into a format that is consumable by Map/Reduce.

Field Summary

Fields
Modifier and Type Field and Description

static String COLUMN_LIST
space delimited list of columns

Fields
Modifier and Type	Field and Description
`static String`	`COLUMN_LIST` space delimited list of columns

Constructor Summary

Constructors
Constructor and Description

TableInputFormat()

Constructors
Constructor and Description
`TableInputFormat()`

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`configure(org.apache.hadoop.mapred.JobConf job)`
`protected void`	`initialize(org.apache.hadoop.mapred.JobConf job)` Handle subclass specific set up.
`void`	`validateInput(org.apache.hadoop.mapred.JobConf job)`

Methods inherited from class org.apache.hadoop.hbase.mapred.TableInputFormatBase
closeTable, getHTable, getRecordReader, getSplits, getTable, initializeTable, setHTable, setInputColumns, setRowFilter, setTableRecordReader

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

- Field Detail
  - COLUMN_LIST
```
public static final String COLUMN_LIST
```
    space delimited list of columns
    
    See Also:
    Constant Field Values
- Constructor Detail
  - TableInputFormat
```
public TableInputFormat()
```
- Method Detail
  - configure
```
public void configure(org.apache.hadoop.mapred.JobConf job)
```
    Specified by:
    
    configure in interface org.apache.hadoop.mapred.JobConfigurable
  - initialize
```
protected void initialize(org.apache.hadoop.mapred.JobConf job)
                   throws IOException
```
    Description copied from class: TableInputFormatBase
    
    Handle subclass specific set up. Each of the entry points used by the MapReduce framework, TableInputFormatBase.getRecordReader(InputSplit, JobConf, Reporter) and TableInputFormatBase.getSplits(JobConf, int), will call TableInputFormatBase.initialize(JobConf) as a convenient centralized location to handle retrieving the necessary configuration information and calling TableInputFormatBase.initializeTable(Connection, TableName). Subclasses should implement their initialize call such that it is safe to call multiple times. The current TableInputFormatBase implementation relies on a non-null table reference to decide if an initialize call is needed, but this behavior may change in the future. In particular, it is critical that initializeTable not be called multiple times since this will leak Connection instances.
    
    Overrides:
    
    initialize in class TableInputFormatBase
    
    Throws:
    
    IOException
  - validateInput
```
public void validateInput(org.apache.hadoop.mapred.JobConf job)
                   throws IOException
```
    Throws:
    
    IOException

Class TableInputFormat

Field Summary

Constructor Summary

Method Summary

Methods inherited from class org.apache.hadoop.hbase.mapred.TableInputFormatBase

Methods inherited from class java.lang.Object

Field Detail

COLUMN_LIST

Constructor Detail

TableInputFormat

Method Detail

configure

initialize

validateInput