org.apache.hadoop.hive.ql.io.parquet.vector

Class VectorizedDummyColumnReader

java.lang.Object

org.apache.hadoop.hive.ql.io.parquet.vector.BaseVectorizedColumnReader

org.apache.hadoop.hive.ql.io.parquet.vector.VectorizedDummyColumnReader

All Implemented Interfaces:

VectorizedColumnReader

public class VectorizedDummyColumnReader
extends BaseVectorizedColumnReader

A dummy vectorized parquet reader to support schema evolution.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.hive.ql.io.parquet.vector.BaseVectorizedColumnReader

BaseVectorizedColumnReader.NullIntIterator, BaseVectorizedColumnReader.RLEIntIterator, BaseVectorizedColumnReader.ValuesReaderIntIterator

Field Summary

Fields inherited from class org.apache.hadoop.hive.ql.io.parquet.vector.BaseVectorizedColumnReader

dataColumn, definitionLevel, definitionLevelColumn, descriptor, dictionary, endOfPageValueCount, hiveType, isCurrentPageDictionaryEncoded, maxDefLevel, pageReader, pageValueCount, repetitionLevel, repetitionLevelColumn, skipTimestampConversion, type, valuesRead

Constructor Summary

Constructors

Constructor and Description
VectorizedDummyColumnReader()

Method Summary

Modifier and Type	Method and Description
void	readBatch(int total, org.apache.hadoop.hive.ql.exec.vector.ColumnVector column, TypeInfo columnType) read records with specified size and type into the columnVector

Methods inherited from class org.apache.hadoop.hive.ql.io.parquet.vector.BaseVectorizedColumnReader

decimalTypeCheck, readPage, readRepetitionAndDefinitionLevels

Methods inherited from class java.lang.Object

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

Constructor Detail

VectorizedDummyColumnReader

public VectorizedDummyColumnReader()

Method Detail

readBatch

public void readBatch(int total,
                      org.apache.hadoop.hive.ql.exec.vector.ColumnVector column,
                      TypeInfo columnType)
               throws IOException

Description copied from interface: VectorizedColumnReader

read records with specified size and type into the columnVector

Parameters:

total - number of records to read into the column vector

column - column vector where the reader will read data into

columnType - the type of column vector

Throws:

IOException