parquet.hadoop

Class ParquetReader<T>

java.lang.Object

parquet.hadoop.ParquetReader<T>

All Implemented Interfaces:

Closeable, AutoCloseable

public class ParquetReader<T>
extends Object
implements Closeable

Read records from a Parquet file.

Constructor Summary

Constructors

Constructor and Description
ParquetReader(org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.fs.Path file, ReadSupport<T> readSupport)
ParquetReader(org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.fs.Path file, ReadSupport<T> readSupport, UnboundRecordFilter filter)
ParquetReader(org.apache.hadoop.fs.Path file, ReadSupport<T> readSupport)
ParquetReader(org.apache.hadoop.fs.Path file, ReadSupport<T> readSupport, UnboundRecordFilter filter)

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
T	read()

Methods inherited from class java.lang.Object

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

Constructor Detail

ParquetReader

public ParquetReader(org.apache.hadoop.fs.Path file,
             ReadSupport<T> readSupport)
              throws IOException

Parameters:

file - the file to read

readSupport - to materialize records

Throws:

IOException

ParquetReader

public ParquetReader(org.apache.hadoop.conf.Configuration conf,
             org.apache.hadoop.fs.Path file,
             ReadSupport<T> readSupport)
              throws IOException

Parameters:

conf - the configuration

file - the file to read

readSupport - to materialize records

Throws:

IOException

ParquetReader

public ParquetReader(org.apache.hadoop.fs.Path file,
             ReadSupport<T> readSupport,
             UnboundRecordFilter filter)
              throws IOException

Parameters:

file - the file to read

readSupport - to materialize records

filter - the filter to use to filter records

Throws:

IOException

ParquetReader

public ParquetReader(org.apache.hadoop.conf.Configuration conf,
             org.apache.hadoop.fs.Path file,
             ReadSupport<T> readSupport,
             UnboundRecordFilter filter)
              throws IOException

Parameters:

conf - the configuration

file - the file to read

readSupport - to materialize records

filter - the filter to use to filter records

Throws:

IOException

Method Detail

read

public T read()
       throws IOException

Returns:

the next record or null if finished

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Throws:

IOException