org.apache.hadoop.hbase.mob

类 ExpiredMobFileCleaner

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.hadoop.hbase.mob.ExpiredMobFileCleaner

所有已实现的接口:

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

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

The cleaner to delete the expired MOB files.

构造器概要

构造器

构造器和说明
ExpiredMobFileCleaner()

方法概要

限定符和类型	方法和说明
void	cleanExpiredMobFiles(String tableName, ColumnFamilyDescriptor family) Cleans the MOB files when they're expired and their min versions are 0.
static void	main(String[] args)
int	run(String[] args)

从类继承的方法 org.apache.hadoop.conf.Configured

getConf, setConf

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.hadoop.conf.Configurable

getConf, setConf

构造器详细资料

ExpiredMobFileCleaner

public ExpiredMobFileCleaner()

方法详细资料

cleanExpiredMobFiles

public void cleanExpiredMobFiles(String tableName,
                                 ColumnFamilyDescriptor family)
                          throws IOException

Cleans the MOB files when they're expired and their min versions are 0. If the latest timestamp of Cells in a MOB file is older than the TTL in the column family, it's regarded as expired. This cleaner deletes them. At a time T0, the cells in a mob file M0 are expired. If a user starts a scan before T0, those mob cells are visible, this scan still runs after T0. At that time T1, this mob file M0 is expired, meanwhile a cleaner starts, the M0 is archived and can be read in the archive directory.

参数:

tableName - The current table name.

family - The current family.

抛出:

IOException

main

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

抛出:

Exception

run

public int run(String[] args)
        throws Exception

指定者:

run 在接口中 org.apache.hadoop.util.Tool

抛出:

Exception