Package org.apache.hadoop.util

Common utilities.

See: Description

Interface Summary

Interface	Description
IPList
Progressable	A facility for reporting progress.
Tool	A tool interface that supports handling of generic command-line options.

Class Summary

Class	Description
ApplicationClassLoader	A URLClassLoader for application isolation.
DurationInfo	A duration with logging of final state at info or debug in the close() call.
OperationDuration	Little duration counter.
PureJavaCrc32	A pure-java implementation of the CRC32 checksum that uses the same polynomial as the built-in native CRC32.
PureJavaCrc32C	A pure-java implementation of the CRC32 checksum that uses the CRC32-C polynomial, the same polynomial used by iSCSI and implemented on many Intel chipsets supporting SSE4.2.
ReflectionUtils	General reflection utils
Shell	A base class for running a Shell command.
ShutdownHookManager	The ShutdownHookManager enables running shutdownHook in a deterministic order, higher priority first.
StringInterner	Provides string interning utility methods.
SysInfo	Plugin to calculate resource information on the system.
ToolRunner	A utility to help run Tools.
VersionInfo	This class returns build information about Hadoop components.

Package org.apache.hadoop.util Description

Common utilities.