Package org.apache.hadoop.io

Added Classes and Interfaces
ReadaheadPool	Manages a pool of threads which can issue readahead requests on file descriptors.
ReadaheadPool.ReadaheadRequest	An outstanding readahead request that has been submitted to the pool.
SecureIOUtils	This class provides secure APIs for opening and creating files on the local disk.
SecureIOUtils.AlreadyExistsException	Signals that an attempt to create a file at a given pathname has failed because another file already existed at that path.

 

Changed Classes
IOUtils	An utility class for I/O related functionality.
MD5Hash	A Writable for MD5 hash values.
SequenceFile	SequenceFiles are flat files consisting of binary key/value pairs.
SequenceFile.Writer	Write key/value pairs to a sequence-format file.
UTF8	A WritableComparable for strings that uses the UTF8 encoding.
WritableComparator	A Comparator for