@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
IOException
public Class getKeyClass()
public void initialize(InputSplit genericSplit, TaskAttemptContext context) throws IOException
RecordReader
initialize
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 taskIOException
public 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>
IOException
public org.apache.hadoop.io.Text getCurrentKey()
RecordReader
getCurrentKey
in class RecordReader<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>
public org.apache.hadoop.io.Text getCurrentValue()
RecordReader
getCurrentValue
in class RecordReader<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>
public float getProgress() throws IOException
RecordReader
getProgress
in class RecordReader<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>
IOException
public void close() throws IOException
RecordReader
close
in interface Closeable
close
in interface AutoCloseable
close
in class RecordReader<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>
IOException
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