org.apache.hadoop.hbase.util

Class ServerCommandLine

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.hadoop.hbase.util.ServerCommandLine

All Implemented Interfaces:

org.apache.hadoop.conf.Configurable, org.apache.hadoop.util.Tool

Direct Known Subclasses:

HMasterCommandLine, HRegionServerCommandLine

@InterfaceAudience.Private
public abstract class ServerCommandLine
extends org.apache.hadoop.conf.Configured
implements org.apache.hadoop.util.Tool

Base class for command lines that start up various HBase daemons.

Field Summary

Fields

Modifier and Type	Field and Description
private static Set<String>	DEFAULT_SKIP_WORDS
private static org.slf4j.Logger	LOG

Constructor Summary

Constructors

Constructor and Description
ServerCommandLine()

Method Summary

Modifier and Type	Method and Description
void	doMain(String[] args) Parse and run the given command line.
protected abstract String	getUsage() Implementing subclasses should return a usage string to print out.
private static void	logHBaseConfigs(org.apache.hadoop.conf.Configuration conf) Print into log some of the important hbase attributes.
static void	logJVMInfo() Log information about the currently running JVM.
static void	logProcessInfo(org.apache.hadoop.conf.Configuration conf) Logs information about the currently running JVM process including the environment variables.
protected void	usage(String message) Print usage information for this command line.

Methods inherited from class org.apache.hadoop.conf.Configured

getConf, setConf

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.util.Tool

run

Methods inherited from interface org.apache.hadoop.conf.Configurable

getConf, setConf

Field Detail

LOG

private static final org.slf4j.Logger LOG

DEFAULT_SKIP_WORDS

private static final Set<String> DEFAULT_SKIP_WORDS

Constructor Detail

ServerCommandLine

public ServerCommandLine()

Method Detail

getUsage

protected abstract String getUsage()

Implementing subclasses should return a usage string to print out.

usage

protected void usage(String message)

Print usage information for this command line.

Parameters:

message - if not null, print this message before the usage info.

logJVMInfo

public static void logJVMInfo()

Log information about the currently running JVM.

logHBaseConfigs

private static void logHBaseConfigs(org.apache.hadoop.conf.Configuration conf)

Print into log some of the important hbase attributes.

logProcessInfo

public static void logProcessInfo(org.apache.hadoop.conf.Configuration conf)

Logs information about the currently running JVM process including the environment variables. Logging of env vars can be disabled by setting "hbase.envvars.logging.disabled" to "true".

If enabled, you can also exclude environment variables containing certain substrings by setting "hbase.envvars.logging.skipwords" to comma separated list of such substrings.

doMain

public void doMain(String[] args)

Parse and run the given command line. This will exit the JVM with the exit code returned from run(). If return code is 0, wait for atmost 30 seconds for all non-daemon threads to quit, otherwise exit the jvm