ml.shifu.guagua.mapreduce
类 GuaguaOptionsParser

java.lang.Object
  ml.shifu.guagua.mapreduce.GuaguaOptionsParser

public class GuaguaOptionsParser
extends Object

Copy from hadoop GenericOptionsParser and extend it.

Add other parameter support like -w, -m ...

另请参见：

Tool, ToolRunner

构造方法摘要

GuaguaOptionsParser(org.apache.hadoop.conf.Configuration conf, org.apache.commons.cli.Options options, String[] args)
Create a GuaguaOptionsParser to parse given options as well as generic Hadoop options.

GuaguaOptionsParser(org.apache.hadoop.conf.Configuration conf, String[] args)
Create a GuaguaOptionsParser to parse only the generic Hadoop arguments.

GuaguaOptionsParser(org.apache.commons.cli.Options opts, String[] args)
Create an options parser with the given options to parse the args.

GuaguaOptionsParser(String[] args)
Create an options parser to parse the args.

方法摘要

org.apache.commons.cli.CommandLine	getCommandLine() Returns the commons-cli CommandLine object to process the parsed arguments.
org.apache.hadoop.conf.Configuration	getConfiguration() Get the modified configuration
static URL[]	getLibJars(org.apache.hadoop.conf.Configuration conf) If libjars are set in the conf, parse the libjars.
String[]	getRemainingArgs() Returns an array of Strings containing only application-specific arguments.
static void	printGenericCommandUsage(PrintStream out) Print the usage message for generic command-line options supported.

从类 java.lang.Object 继承的方法

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

构造方法详细信息

GuaguaOptionsParser

public GuaguaOptionsParser(org.apache.commons.cli.Options opts,
                           String[] args)
                    throws IOException

Create an options parser with the given options to parse the args.

参数：

opts - the options

args - the command line arguments

抛出：

IOException

GuaguaOptionsParser

public GuaguaOptionsParser(String[] args)
                    throws IOException

Create an options parser to parse the args.

参数：

args - the command line arguments

抛出：

IOException

GuaguaOptionsParser

public GuaguaOptionsParser(org.apache.hadoop.conf.Configuration conf,
                           String[] args)
                    throws IOException

Create a GuaguaOptionsParser to parse only the generic Hadoop arguments. The array of string arguments other than the generic arguments can be obtained by getRemainingArgs().

参数：

conf - the Configuration to modify.

args - command-line arguments.

抛出：

IOException

GuaguaOptionsParser

public GuaguaOptionsParser(org.apache.hadoop.conf.Configuration conf,
                           org.apache.commons.cli.Options options,
                           String[] args)
                    throws IOException

Create a GuaguaOptionsParser to parse given options as well as generic Hadoop options. The resulting CommandLine object can be obtained by getCommandLine().

参数：

conf - the configuration to modify

options - options built by the caller

args - User-specified arguments

抛出：

IOException

方法详细信息

getRemainingArgs

public String[] getRemainingArgs()

Returns an array of Strings containing only application-specific arguments.

返回：

array of Strings containing the un-parsed arguments or empty array if commandLine was not defined.

getConfiguration

public org.apache.hadoop.conf.Configuration getConfiguration()

Get the modified configuration

返回：

the configuration that has the modified parameters.

getCommandLine

public org.apache.commons.cli.CommandLine getCommandLine()

Returns the commons-cli CommandLine object to process the parsed arguments. Note: If the object is created with GuaguaOptionsParser(Configuration, String[]), then returned object will only contain parsed generic options.

返回：

CommandLine representing list of arguments parsed against Options descriptor.

getLibJars

public static URL[] getLibJars(org.apache.hadoop.conf.Configuration conf)
                        throws IOException

If libjars are set in the conf, parse the libjars.

抛出：

IOException

printGenericCommandUsage

public static void printGenericCommandUsage(PrintStream out)

Print the usage message for generic command-line options supported.

参数：

out - stream to print the usage message to.