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HBase备份__开发人员指南_E-MapReduce-阿里云

E-MapReduce的HBase集群，可以通过HBase内置的快照(snapshot)功能对HBase的表进行备份，并将备份的数据导出到阿里云存储服务OSS中,示例如下：

1.创建HBase集群

详见集群创建文档

2.创建table

>create 'test','cf'

3.添加数据

> put 'test','a','cf:c1',1
> put 'test','a','cf:c2',2
> put 'test','b','cf:c1',3
> put 'test','b','cf:c2',4
> put 'test','c','cf:c1',5
> put 'test','c','cf:c2',6

4.创建快照

hbase snapshot create -n test_snapshot -t test

查看快照

>list_snapshots
SNAPSHOT                TABLE + CREATION TIME
 test_snapshot          test (Sun Sep 04 20:31:00 +0800 2016)
1 row(s) in 0.2080 seconds

5. 导出到OSS

hbase org.apache.hadoop.hbase.snapshot.ExportSnapshot -snapshot test_snapshot -copy-to oss://$accessKeyId:$accessKeySecret@$bucket.oss-cn-hangzhou-internal.aliyuncs.com/hbase/snapshot/test

备注: OSS使用内网Endpoint

6.创建另一个HBase集群

7.OSS导出快照

hbase org.apache.hadoop.hbase.snapshot.ExportSnapshot -snapshot test_snapshot -copy-from oss://$accessKeyId:$accessKeySecret@$bucket.oss-cn-hangzhou-internal.aliyuncs.com/hbase/snapshot/test -copy-to /hbase/

8.从快照恢复数据

>restore _snapshot 'test_snapshot'

>scan 'test'
ROW                     COLUMN+CELL
 a                      column=cf:c1, timestamp=1472992081375, value=1
 a                      column=cf:c2, timestamp=1472992090434, value=2
 b                      column=cf:c1, timestamp=1472992104339, value=3
 b                      column=cf:c2, timestamp=1472992099611, value=4
 c                      column=cf:c1, timestamp=1472992112657, value=5
 c                      column=cf:c2, timestamp=1472992118964, value=6
3 row(s) in 0.0540 seconds

9.从快照创建新表

>clone_snapshot 'test_snapshot','test_2'

>scan 'test_2'
ROW                     COLUMN+CELL
 a                      column=cf:c1, timestamp=1472992081375, value=1
 a                      column=cf:c2, timestamp=1472992090434, value=2
 b                      column=cf:c1, timestamp=1472992104339, value=3
 b                      column=cf:c2, timestamp=1472992099611, value=4
 c                      column=cf:c1, timestamp=1472992112657, value=5
 c                      column=cf:c2, timestamp=1472992118964, value=6
3 row(s) in 0.0540 seconds

最后更新：2016-09-21 14:57:48

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