org.apache.trevni.avro.mapreduce

Class AvroTrevniKeyRecordWriter<T>

java.lang.Object

org.apache.hadoop.mapreduce.RecordWriter<K,V>

org.apache.trevni.avro.mapreduce.AvroTrevniRecordWriterBase<AvroKey<T>,org.apache.hadoop.io.NullWritable,T>

org.apache.trevni.avro.mapreduce.AvroTrevniKeyRecordWriter<T>

Type Parameters:

T - The Java type of the Trevni data to write.

public class AvroTrevniKeyRecordWriter<T>
extends AvroTrevniRecordWriterBase<AvroKey<T>,org.apache.hadoop.io.NullWritable,T>

Writes Trevni records to an Trevni container file output stream.

Field Summary

Fields inherited from class org.apache.trevni.avro.mapreduce.AvroTrevniRecordWriterBase

EXT, meta, META_PREFIX, part, schema, writer

Constructor Summary

Constructors

Constructor and Description
AvroTrevniKeyRecordWriter(org.apache.hadoop.mapreduce.TaskAttemptContext context) Constructor.

Method Summary

Modifier and Type	Method and Description
protected Schema	initSchema(org.apache.hadoop.mapreduce.TaskAttemptContext context) Use the task context to construct a schema for writing
void	write(AvroKey<T> key, org.apache.hadoop.io.NullWritable value)

Methods inherited from class org.apache.trevni.avro.mapreduce.AvroTrevniRecordWriterBase

close, flush

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AvroTrevniKeyRecordWriter

public AvroTrevniKeyRecordWriter(org.apache.hadoop.mapreduce.TaskAttemptContext context)
                          throws IOException

Constructor.

Parameters:

context - The TaskAttempContext to supply the writer with information form the job configuration

Throws:

IOException

Method Detail

write

public void write(AvroKey<T> key,
                  org.apache.hadoop.io.NullWritable value)
           throws IOException,
                  InterruptedException

Specified by:

write in class org.apache.hadoop.mapreduce.RecordWriter<AvroKey<T>,org.apache.hadoop.io.NullWritable>

Throws:

IOException

InterruptedException

initSchema

protected Schema initSchema(org.apache.hadoop.mapreduce.TaskAttemptContext context)

Use the task context to construct a schema for writing

Specified by:

initSchema in class AvroTrevniRecordWriterBase<AvroKey<T>,org.apache.hadoop.io.NullWritable,T>