org.apache.hadoop.hbase.snapshot

Class ExportSnapshot

java.lang.Object

org.apache.hadoop.hbase.util.AbstractHBaseTool

org.apache.hadoop.hbase.snapshot.ExportSnapshot

All Implemented Interfaces:

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

@InterfaceAudience.Public
public class ExportSnapshot
extends AbstractHBaseTool
implements org.apache.hadoop.util.Tool

Export the specified snapshot to a given FileSystem. The .snapshot/name folder is copied to the destination cluster and then all the hfiles/wals are copied using a Map-Reduce Job in the .archive/ location. When everything is done, the second cluster can restore the snapshot.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ExportSnapshot.Counter

Field Summary

Fields

Modifier and Type	Field and Description
static String	CONF_DEST_PREFIX Configuration prefix for overrides for the destination filesystem
protected static String	CONF_SKIP_TMP
static String	CONF_SOURCE_PREFIX Configuration prefix for overrides for the source filesystem
static String	NAME

Fields inherited from class org.apache.hadoop.hbase.util.AbstractHBaseTool

cmdLineArgs, conf, EXIT_FAILURE, EXIT_SUCCESS, LONG_HELP_OPTION, options, SHORT_HELP_OPTION

Constructor Summary

Constructors

Constructor and Description
ExportSnapshot()

Method Summary

Modifier and Type	Method and Description
protected void	addOptions() Override this to add command-line options using AbstractHBaseTool.addOptWithArg(java.lang.String, java.lang.String) and similar methods.
int	doWork() Execute the export snapshot by copying the snapshot metadata, hfiles and wals.
static void	main(String[] args)
protected void	printUsage()
protected void	processOptions(org.apache.hbase.thirdparty.org.apache.commons.cli.CommandLine cmd) This method is called to process the options after they have been parsed.

Methods inherited from class org.apache.hadoop.hbase.util.AbstractHBaseTool

addOption, addOptNoArg, addOptNoArg, addOptWithArg, addOptWithArg, addRequiredOption, addRequiredOptWithArg, addRequiredOptWithArg, doStaticMain, getConf, getOptionAsDouble, getOptionAsInt, getOptionAsLong, newParser, parseArgs, parseInt, parseLong, printUsage, processOldArgs, run, 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

NAME

public static final String NAME

See Also:

Constant Field Values

CONF_SOURCE_PREFIX

public static final String CONF_SOURCE_PREFIX

Configuration prefix for overrides for the source filesystem

See Also:

Constant Field Values

CONF_DEST_PREFIX

public static final String CONF_DEST_PREFIX

Configuration prefix for overrides for the destination filesystem

See Also:

Constant Field Values

CONF_SKIP_TMP

protected static final String CONF_SKIP_TMP

See Also:

Constant Field Values

Constructor Detail

ExportSnapshot

public ExportSnapshot()

Method Detail

processOptions

protected void processOptions(org.apache.hbase.thirdparty.org.apache.commons.cli.CommandLine cmd)

Description copied from class: AbstractHBaseTool

This method is called to process the options after they have been parsed.

Specified by:

processOptions in class AbstractHBaseTool

doWork

public int doWork()
           throws IOException

Execute the export snapshot by copying the snapshot metadata, hfiles and wals.

Specified by:

doWork in class AbstractHBaseTool

Returns:

0 on success, and != 0 upon failure.

Throws:

IOException

printUsage

protected void printUsage()

Overrides:

printUsage in class AbstractHBaseTool

addOptions

protected void addOptions()

Description copied from class: AbstractHBaseTool

Override this to add command-line options using AbstractHBaseTool.addOptWithArg(java.lang.String, java.lang.String) and similar methods.

Specified by:

addOptions in class AbstractHBaseTool

main

public static void main(String[] args)