org.apache.hadoop.hbase.util

Class HFileArchiveUtil

java.lang.Object

org.apache.hadoop.hbase.util.HFileArchiveUtil

public class HFileArchiveUtil
extends Object

Helper class for all utilities related to archival/retrieval of HFiles

Method Summary

Methods

Modifier and Type	Method and Description
static org.apache.hadoop.fs.Path	getArchivePath(org.apache.hadoop.conf.Configuration conf) Get the full path to the archive directory on the configured FileSystem
static org.apache.hadoop.fs.Path	getRegionArchiveDir(org.apache.hadoop.fs.Path rootDir, TableName tableName, org.apache.hadoop.fs.Path regiondir) Get the archive directory for a given region under the specified table
static org.apache.hadoop.fs.Path	getRegionArchiveDir(org.apache.hadoop.fs.Path rootDir, TableName tableName, String encodedRegionName) Get the archive directory for a given region under the specified table
static org.apache.hadoop.fs.Path	getStoreArchivePath(org.apache.hadoop.conf.Configuration conf, HRegionInfo region, org.apache.hadoop.fs.Path tabledir, byte[] family) Get the directory to archive a store directory
static org.apache.hadoop.fs.Path	getStoreArchivePath(org.apache.hadoop.conf.Configuration conf, TableName tableName, String regionName, String familyName) Get the directory to archive a store directory
static org.apache.hadoop.fs.Path	getTableArchivePath(org.apache.hadoop.conf.Configuration conf, TableName tableName) Get the path to the table archive directory based on the configured archive directory.
static org.apache.hadoop.fs.Path	getTableArchivePath(org.apache.hadoop.fs.Path rootdir, TableName tableName) Get the path to the table archive directory based on the configured archive directory.

Methods inherited from class java.lang.Object

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

Method Detail

getStoreArchivePath

public static org.apache.hadoop.fs.Path getStoreArchivePath(org.apache.hadoop.conf.Configuration conf,
                                            TableName tableName,
                                            String regionName,
                                            String familyName)
                                                     throws IOException

Get the directory to archive a store directory

Parameters:

conf - Configuration to read for the archive directory name

tableName - table name under which the store currently lives

regionName - region encoded name under which the store currently lives

familyName - name of the family in the store

Returns:

Path to the directory to archive the given store or null if it should not be archived

Throws:

IOException

getStoreArchivePath

public static org.apache.hadoop.fs.Path getStoreArchivePath(org.apache.hadoop.conf.Configuration conf,
                                            HRegionInfo region,
                                            org.apache.hadoop.fs.Path tabledir,
                                            byte[] family)
                                                     throws IOException

Get the directory to archive a store directory

Parameters:

conf - Configuration to read for the archive directory name.

region - parent region information under which the store currently lives

tabledir - directory for the table under which the store currently lives

family - name of the family in the store

Returns:

Path to the directory to archive the given store or null if it should not be archived

Throws:

IOException

getRegionArchiveDir

public static org.apache.hadoop.fs.Path getRegionArchiveDir(org.apache.hadoop.fs.Path rootDir,
                                            TableName tableName,
                                            org.apache.hadoop.fs.Path regiondir)

Get the archive directory for a given region under the specified table

Parameters:

tableName - the table name. Cannot be null.

regiondir - the path to the region directory. Cannot be null.

Returns:

Path to the directory to archive the given region, or null if it should not be archived

getRegionArchiveDir

public static org.apache.hadoop.fs.Path getRegionArchiveDir(org.apache.hadoop.fs.Path rootDir,
                                            TableName tableName,
                                            String encodedRegionName)

Get the archive directory for a given region under the specified table

Parameters:

rootDir - Path to the root directory where hbase files are stored (for building the archive path)

tableName - name of the table to archive. Cannot be null.

Returns:

Path to the directory to archive the given region, or null if it should not be archived

getTableArchivePath

public static org.apache.hadoop.fs.Path getTableArchivePath(org.apache.hadoop.fs.Path rootdir,
                                            TableName tableName)

Get the path to the table archive directory based on the configured archive directory.

Get the path to the table's archive directory.

Generally of the form: /hbase/.archive/[tablename]

Parameters:

rootdir - Path to the root directory where hbase files are stored (for building the archive path)

tableName - Name of the table to be archived. Cannot be null.

Returns:

Path to the archive directory for the table

getTableArchivePath

public static org.apache.hadoop.fs.Path getTableArchivePath(org.apache.hadoop.conf.Configuration conf,
                                            TableName tableName)
                                                     throws IOException

Get the path to the table archive directory based on the configured archive directory.

Assumed that the table should already be archived.

Parameters:

conf - Configuration to read the archive directory property. Can be null

tableName - Name of the table to be archived. Cannot be null.

Returns:

Path to the archive directory for the table

Throws:

IOException

getArchivePath

public static org.apache.hadoop.fs.Path getArchivePath(org.apache.hadoop.conf.Configuration conf)
                                                throws IOException

Get the full path to the archive directory on the configured FileSystem

Parameters:

conf - to look for archive directory name and root directory. Cannot be null. Notes for testing: requires a FileSystem root directory to be specified.

Returns:

the full Path to the archive directory, as defined by the configuration

Throws:

IOException - if an unexpected error occurs