@InterfaceAudience.Public @InterfaceStability.Stable public class KeyValueLineRecordReader extends RecordReader<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>
| Modifier and Type | Field and Description |
|---|---|
static String |
KEY_VALUE_SEPERATOR |
| Constructor and Description |
|---|
KeyValueLineRecordReader(org.apache.hadoop.conf.Configuration conf) |
| Modifier and Type | Method and Description |
|---|---|
void |
close()
Close the record reader.
|
static int |
findSeparator(byte[] utf,
int start,
int length,
byte sep) |
org.apache.hadoop.io.Text |
getCurrentKey()
Get the current key
|
org.apache.hadoop.io.Text |
getCurrentValue()
Get the current value.
|
Class |
getKeyClass() |
float |
getProgress()
The current progress of the record reader through its data.
|
void |
initialize(InputSplit genericSplit,
TaskAttemptContext context)
Called once at initialization.
|
boolean |
nextKeyValue()
Read key/value pair in a line.
|
static void |
setKeyValue(org.apache.hadoop.io.Text key,
org.apache.hadoop.io.Text value,
byte[] line,
int lineLen,
int pos) |
public static final String KEY_VALUE_SEPERATOR
public KeyValueLineRecordReader(org.apache.hadoop.conf.Configuration conf)
throws IOException
IOExceptionpublic Class getKeyClass()
public void initialize(InputSplit genericSplit, TaskAttemptContext context) throws IOException
RecordReaderinitialize in class RecordReader<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>genericSplit - the split that defines the range of records to readcontext - the information about the taskIOExceptionpublic static int findSeparator(byte[] utf,
int start,
int length,
byte sep)
public static void setKeyValue(org.apache.hadoop.io.Text key,
org.apache.hadoop.io.Text value,
byte[] line,
int lineLen,
int pos)
public boolean nextKeyValue()
throws IOException
nextKeyValue in class RecordReader<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>IOExceptionpublic org.apache.hadoop.io.Text getCurrentKey()
RecordReadergetCurrentKey in class RecordReader<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>public org.apache.hadoop.io.Text getCurrentValue()
RecordReadergetCurrentValue in class RecordReader<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>public float getProgress()
throws IOException
RecordReadergetProgress in class RecordReader<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>IOExceptionpublic void close()
throws IOException
RecordReaderclose in interface Closeableclose in interface AutoCloseableclose in class RecordReader<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>IOExceptionCopyright © 2022 Apache Software Foundation. All rights reserved.