org.apache.hadoop.hive.ql.io.parquet
Class MapredParquetOutputFormat

java.lang.Object
  org.apache.hadoop.mapred.FileOutputFormat<Void,org.apache.hadoop.io.ArrayWritable>
      org.apache.hadoop.hive.ql.io.parquet.MapredParquetOutputFormat

All Implemented Interfaces:

HiveOutputFormat<Void,org.apache.hadoop.io.ArrayWritable>, org.apache.hadoop.mapred.OutputFormat<Void,org.apache.hadoop.io.ArrayWritable>

public class MapredParquetOutputFormat
extends org.apache.hadoop.mapred.FileOutputFormat<Void,org.apache.hadoop.io.ArrayWritable>
implements HiveOutputFormat<Void,org.apache.hadoop.io.ArrayWritable>

A Parquet OutputFormat for Hive (with the deprecated package mapred)

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.mapred.FileOutputFormat

org.apache.hadoop.mapred.FileOutputFormat.Counter

Constructor Summary

MapredParquetOutputFormat()

MapredParquetOutputFormat(org.apache.hadoop.mapreduce.OutputFormat<Void,org.apache.hadoop.io.ArrayWritable> mapreduceOutputFormat)

Method Summary

void	checkOutputSpecs(org.apache.hadoop.fs.FileSystem ignored, org.apache.hadoop.mapred.JobConf job)
FileSinkOperator.RecordWriter	getHiveRecordWriter(org.apache.hadoop.mapred.JobConf jobConf, org.apache.hadoop.fs.Path finalOutPath, Class<? extends org.apache.hadoop.io.Writable> valueClass, boolean isCompressed, Properties tableProperties, org.apache.hadoop.util.Progressable progress) Create the parquet schema from the hive schema, and return the RecordWriterWrapper which contains the real output format
org.apache.hadoop.mapred.RecordWriter<Void,org.apache.hadoop.io.ArrayWritable>	getRecordWriter(org.apache.hadoop.fs.FileSystem ignored, org.apache.hadoop.mapred.JobConf job, String name, org.apache.hadoop.util.Progressable progress)

Methods inherited from class org.apache.hadoop.mapred.FileOutputFormat

getCompressOutput, getOutputCompressorClass, getOutputPath, getPathForCustomFile, getTaskOutputPath, getUniqueName, getWorkOutputPath, setCompressOutput, setOutputCompressorClass, setOutputPath, setWorkOutputPath

Methods inherited from class java.lang.Object

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

Constructor Detail

MapredParquetOutputFormat

public MapredParquetOutputFormat()

MapredParquetOutputFormat

public MapredParquetOutputFormat(org.apache.hadoop.mapreduce.OutputFormat<Void,org.apache.hadoop.io.ArrayWritable> mapreduceOutputFormat)

Method Detail

checkOutputSpecs

public void checkOutputSpecs(org.apache.hadoop.fs.FileSystem ignored,
                             org.apache.hadoop.mapred.JobConf job)
                      throws IOException

Specified by:

checkOutputSpecs in interface org.apache.hadoop.mapred.OutputFormat<Void,org.apache.hadoop.io.ArrayWritable>

Overrides:

checkOutputSpecs in class org.apache.hadoop.mapred.FileOutputFormat<Void,org.apache.hadoop.io.ArrayWritable>

Throws:

IOException

getRecordWriter

public org.apache.hadoop.mapred.RecordWriter<Void,org.apache.hadoop.io.ArrayWritable> getRecordWriter(org.apache.hadoop.fs.FileSystem ignored,
                                                                                                      org.apache.hadoop.mapred.JobConf job,
                                                                                                      String name,
                                                                                                      org.apache.hadoop.util.Progressable progress)
                                                                                               throws IOException

Specified by:

getRecordWriter in interface org.apache.hadoop.mapred.OutputFormat<Void,org.apache.hadoop.io.ArrayWritable>

Specified by:

getRecordWriter in class org.apache.hadoop.mapred.FileOutputFormat<Void,org.apache.hadoop.io.ArrayWritable>

Throws:

IOException

getHiveRecordWriter

public FileSinkOperator.RecordWriter getHiveRecordWriter(org.apache.hadoop.mapred.JobConf jobConf,
                                                         org.apache.hadoop.fs.Path finalOutPath,
                                                         Class<? extends org.apache.hadoop.io.Writable> valueClass,
                                                         boolean isCompressed,
                                                         Properties tableProperties,
                                                         org.apache.hadoop.util.Progressable progress)
                                                  throws IOException

Create the parquet schema from the hive schema, and return the RecordWriterWrapper which contains the real output format

Specified by:

getHiveRecordWriter in interface HiveOutputFormat<Void,org.apache.hadoop.io.ArrayWritable>

Parameters:

jobConf - the job configuration file

finalOutPath - the final output file to be created

valueClass - the value class used for create

isCompressed - whether the content is compressed or not

tableProperties - the table properties of this file's corresponding table

progress - progress used for status report

Returns:

the RecordWriter for the output file

Throws:

IOException