org.apache.hudi.io.hfile

Class HFileBlockReader

java.lang.Object

org.apache.hudi.io.hfile.HFileBlockReader

public class HFileBlockReader
extends Object

A reader to read one or more HFile blocks based on the start and end offsets.

Constructor Summary

Constructors

Constructor and Description
HFileBlockReader(HFileContext context, SeekableDataInputStream stream, long startOffset, long endOffset) Instantiates the HFileBlockReader.

Method Summary

Modifier and Type	Method and Description
HFileBlock	nextBlock(HFileBlockType expectedBlockType) Reads the next block based on the expected block type.

Methods inherited from class java.lang.Object

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

Constructor Detail

HFileBlockReader

public HFileBlockReader(HFileContext context,
                        SeekableDataInputStream stream,
                        long startOffset,
                        long endOffset)

Instantiates the HFileBlockReader.

Parameters:

context - HFile context.

stream - input data.

startOffset - start offset to read from.

endOffset - end offset to stop at.

Method Detail

nextBlock

public HFileBlock nextBlock(HFileBlockType expectedBlockType)
                     throws IOException

Reads the next block based on the expected block type.

Parameters:

expectedBlockType - expected block type.

Returns:

HFileBlock instance matching the expected block type.

Throws:

IOException - if the type of next block does not match the expected type.