public static class SequenceFileAsBinaryInputFormat.SequenceFileAsBinaryRecordReader extends RecordReader<org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.BytesWritable>
Constructor and Description |
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SequenceFileAsBinaryInputFormat.SequenceFileAsBinaryRecordReader() |
Modifier and Type | Method and Description |
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void |
close()
Close the record reader.
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org.apache.hadoop.io.BytesWritable |
getCurrentKey()
Get the current key
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org.apache.hadoop.io.BytesWritable |
getCurrentValue()
Get the current value.
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String |
getKeyClassName()
Retrieve the name of the key class for this SequenceFile.
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float |
getProgress()
Return the progress within the input split
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String |
getValueClassName()
Retrieve the name of the value class for this SequenceFile.
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void |
initialize(InputSplit split,
TaskAttemptContext context)
Called once at initialization.
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boolean |
nextKeyValue()
Read raw bytes from a SequenceFile.
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public SequenceFileAsBinaryInputFormat.SequenceFileAsBinaryRecordReader()
public void initialize(InputSplit split, TaskAttemptContext context) throws IOException, InterruptedException
RecordReader
initialize
in class RecordReader<org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.BytesWritable>
split
- the split that defines the range of records to readcontext
- the information about the taskIOException
InterruptedException
public org.apache.hadoop.io.BytesWritable getCurrentKey() throws IOException, InterruptedException
RecordReader
getCurrentKey
in class RecordReader<org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.BytesWritable>
IOException
InterruptedException
public org.apache.hadoop.io.BytesWritable getCurrentValue() throws IOException, InterruptedException
RecordReader
getCurrentValue
in class RecordReader<org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.BytesWritable>
IOException
InterruptedException
public String getKeyClassName()
SequenceFile.Reader.getKeyClassName()
public String getValueClassName()
SequenceFile.Reader.getValueClassName()
public boolean nextKeyValue() throws IOException, InterruptedException
nextKeyValue
in class RecordReader<org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.BytesWritable>
IOException
InterruptedException
public void close() throws IOException
RecordReader
close
in interface Closeable
close
in interface AutoCloseable
close
in class RecordReader<org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.BytesWritable>
IOException
public float getProgress() throws IOException, InterruptedException
getProgress
in class RecordReader<org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.BytesWritable>
IOException
InterruptedException
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