Package org.apache.sysds.runtime.io

Class FrameReaderBinaryBlock

java.lang.Object

org.apache.sysds.runtime.io.FrameReader

org.apache.sysds.runtime.io.FrameReaderBinaryBlock

Direct Known Subclasses:

FrameReaderBinaryBlockParallel

public class FrameReaderBinaryBlock
extends FrameReader

Single-threaded frame binary block reader.

Constructor Summary

Constructors

Constructor	Description
FrameReaderBinaryBlock()

Method Summary

Modifier and Type	Method	Description
FrameBlock	readFirstBlock(String fname)	Specific functionality of FrameReaderBinaryBlock, mostly used for testing.
FrameBlock	readFrameFromHDFS(String fname, Types.ValueType[] schema, String[] names, long rlen, long clen)
FrameBlock	readFrameFromInputStream(InputStream is, Types.ValueType[] schema, String[] names, long rlen, long clen)

Methods inherited from class org.apache.sysds.runtime.io.FrameReader

getDefColNames, getDefSchema, readFrameFromHDFS, readFrameFromHDFS, readFrameFromInputStream, readFrameFromInputStream

Methods inherited from class java.lang.Object

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

Constructor Detail

FrameReaderBinaryBlock

public FrameReaderBinaryBlock()

Method Detail

readFrameFromHDFS

public final FrameBlock readFrameFromHDFS(String fname,
                                          Types.ValueType[] schema,
                                          String[] names,
                                          long rlen,
                                          long clen)
                                   throws IOException,
                                          DMLRuntimeException

Specified by:

readFrameFromHDFS in class FrameReader

Throws:

IOException

DMLRuntimeException

readFrameFromInputStream

public FrameBlock readFrameFromInputStream(InputStream is,
                                           Types.ValueType[] schema,
                                           String[] names,
                                           long rlen,
                                           long clen)
                                    throws IOException,
                                           DMLRuntimeException

Specified by:

readFrameFromInputStream in class FrameReader

Throws:

IOException

DMLRuntimeException

readFirstBlock

public FrameBlock readFirstBlock(String fname)
                          throws IOException

Specific functionality of FrameReaderBinaryBlock, mostly used for testing.

Parameters:

fname - file name

Returns:

frame block

Throws:

IOException - if IOException occurs