org.apache.pig.piggybank.storage.hiverc

Class HiveRCOutputFormat

java.lang.Object

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

org.apache.hadoop.mapreduce.lib.output.FileOutputFormat<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.Writable>

org.apache.pig.piggybank.storage.hiverc.HiveRCOutputFormat

public class HiveRCOutputFormat
extends org.apache.hadoop.mapreduce.lib.output.FileOutputFormat<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.Writable>

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	HiveRCOutputFormat.Writer RecordWriter wrapper around an RCFile.Writer

Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.lib.output.FileOutputFormat

org.apache.hadoop.mapreduce.lib.output.FileOutputFormat.Counter

Field Summary

Fields

Modifier and Type	Field and Description
static String	COMPRESSION_CODEC_CONF
static String	DEFAULT_EXTENSION
static String	EXTENSION_OVERRIDE_CONF

Fields inherited from class org.apache.hadoop.mapreduce.lib.output.FileOutputFormat

BASE_OUTPUT_NAME, COMPRESS, COMPRESS_CODEC, COMPRESS_TYPE, OUTDIR, PART

Constructor Summary

Constructors

Constructor and Description
HiveRCOutputFormat()

Method Summary

Modifier and Type	Method and Description
protected org.apache.hadoop.hive.ql.io.RCFile.Writer	createRCFileWriter(org.apache.hadoop.mapreduce.TaskAttemptContext job, org.apache.hadoop.io.Text columnMetadata)
static int	getColumnNumber(org.apache.hadoop.conf.Configuration conf) Returns the number of columns set in the conf for writers.
org.apache.hadoop.mapreduce.RecordWriter<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.Writable>	getRecordWriter(org.apache.hadoop.mapreduce.TaskAttemptContext job)
static void	setColumnNumber(org.apache.hadoop.conf.Configuration conf, int columnNum) set number of columns into the given configuration.

Methods inherited from class org.apache.hadoop.mapreduce.lib.output.FileOutputFormat

checkOutputSpecs, getCompressOutput, getDefaultWorkFile, getOutputCommitter, getOutputCompressorClass, getOutputName, getOutputPath, getPathForWorkFile, getUniqueFile, getWorkOutputPath, setCompressOutput, setOutputCompressorClass, setOutputName, setOutputPath

Methods inherited from class java.lang.Object

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

Field Detail

COMPRESSION_CODEC_CONF

public static String COMPRESSION_CODEC_CONF

DEFAULT_EXTENSION

public static String DEFAULT_EXTENSION

EXTENSION_OVERRIDE_CONF

public static String EXTENSION_OVERRIDE_CONF

Constructor Detail

HiveRCOutputFormat

public HiveRCOutputFormat()

Method Detail

setColumnNumber

public static void setColumnNumber(org.apache.hadoop.conf.Configuration conf,
                                   int columnNum)

set number of columns into the given configuration.

Parameters:

conf - configuration instance which need to set the column number

columnNum - column number for RCFile's Writer

getColumnNumber

public static int getColumnNumber(org.apache.hadoop.conf.Configuration conf)

Returns the number of columns set in the conf for writers.

Parameters:

conf -

Returns:

number of columns for RCFile's writer

createRCFileWriter

protected org.apache.hadoop.hive.ql.io.RCFile.Writer createRCFileWriter(org.apache.hadoop.mapreduce.TaskAttemptContext job,
                                                                        org.apache.hadoop.io.Text columnMetadata)
                                                                 throws IOException

Throws:

IOException

getRecordWriter

public org.apache.hadoop.mapreduce.RecordWriter<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.Writable> getRecordWriter(org.apache.hadoop.mapreduce.TaskAttemptContext job)
                                                                                                                          throws IOException,
                                                                                                                                 InterruptedException

Specified by:

getRecordWriter in class org.apache.hadoop.mapreduce.lib.output.FileOutputFormat<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.Writable>

Throws:

IOException

InterruptedException