org.apache.hadoop.hbase.util

Class HFileV1Detector

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.hadoop.hbase.util.HFileV1Detector

All Implemented Interfaces:

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

public class HFileV1Detector
extends org.apache.hadoop.conf.Configured
implements org.apache.hadoop.util.Tool

Tool to detect presence of any HFileV1 in the given directory. It prints all such regions which have such files.

To print the help section of the tool:

• ./bin/hbase org.apache.hadoop.hbase.util.HFileV1Detector --h or,
• java -cp `hbase classpath` org.apache.hadoop.hbase.util.HFileV1Detector --h

It also supports -h, --help, -help options.

Constructor Summary

Constructors

Constructor and Description
HFileV1Detector()

Method Summary

Methods

Modifier and Type	Method and Description
FileLink	getFileLinkWithPreNSPath(org.apache.hadoop.fs.Path storeFilePath) Creates a FileLink which adds pre-namespace paths in its list of available paths.
static void	main(String[] args)
int	run(String[] args) Checks for HFileV1.

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.conf.Configurable

getConf, setConf

Constructor Detail

HFileV1Detector

public HFileV1Detector()

Method Detail

run

public int run(String[] args)
        throws IOException,
               org.apache.commons.cli.ParseException

Checks for HFileV1.

Specified by:

run in interface org.apache.hadoop.util.Tool

Returns:

0 when no HFileV1 is present. 1 when a HFileV1 is present or, when there is a file with corrupt major version (neither V1 nor V2). -1 in case of any error/exception

Throws:

IOException

org.apache.commons.cli.ParseException

getFileLinkWithPreNSPath

public FileLink getFileLinkWithPreNSPath(org.apache.hadoop.fs.Path storeFilePath)
                                  throws IOException

Creates a FileLink which adds pre-namespace paths in its list of available paths. This is used when reading a snapshot file in a pre-namespace file layout, for example, while upgrading.

Parameters:

storeFilePath -

Returns:

a FileLink which could read from pre-namespace paths.

Throws:

IOException

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception