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See:
Description
Interface Summary | |
---|---|
IndexedSortable | Interface for collections capable of being sorted by IndexedSorter
algorithms. |
IndexedSorter | Interface for sort algorithms accepting IndexedSortable items. |
Progressable | A facility for reporting progress. |
Tool | A tool interface that supports handling of generic command-line options. |
Class Summary | |
---|---|
Daemon | A thread that has called Thread.setDaemon(boolean) with true. |
DiskChecker | Class that provides utility functions for checking disk problem |
GenericOptionsParser | GenericOptionsParser is a utility to parse command line
arguments generic to the Hadoop framework. |
GenericsUtil | Contains utility methods for dealing with Java Generics. |
HeapSort | An implementation of the core algorithm of HeapSort. |
HostsFileReader | |
MergeSort | An implementation of the core algorithm of MergeSort. |
NativeCodeLoader | A helper to load the native hadoop code i.e. |
PlatformName | A helper class for getting build-info of the java-vm. |
PrintJarMainClass | A micro-application that prints the main class name out of a jar file. |
PriorityQueue | A PriorityQueue maintains a partial ordering of its elements such that the least element can always be found in constant time. |
ProgramDriver | A driver that is used to run programs added to it |
Progress | Utility to assist with generation of progress reports. |
QuickSort | An implementation of the core algorithm of QuickSort. |
ReflectionUtils | General reflection utils |
RunJar | Run a Hadoop job jar. |
ServletUtil | |
Shell | A base class for running a Unix command. |
Shell.ShellCommandExecutor | A simple shell command executor. |
StringUtils | General string utils |
ToolRunner | A utility to help run Tool s. |
VersionInfo | This class finds the package info for Hadoop and the HadoopVersionAnnotation information. |
XMLUtils | General xml utilities. |
Exception Summary | |
---|---|
DiskChecker.DiskErrorException | |
DiskChecker.DiskOutOfSpaceException | |
Shell.ExitCodeException | This is an IOException with exit code added. |
Common utilities.
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