[HBASE-11085] Incremental Backup Restore support

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Done
• Assignee: Vladimir Rodionov
• Reporter: Demai Ni
• Created: 26/Apr/14 23:14
• Updated: 17/Jun/22 05:37
• Resolved: 21/Jul/15 21:35

Description

Feature Description

the jira is part of HBASE-7912, and depend on full backup HBASE-10900. for the detail layout and frame work, please reference to HBASE-10900.

When client issues an incremental backup request, BackupManager will check the request and then kicks of a global procedure via HBaseAdmin for all the active regionServer to roll log. Each Region server will record their log number into zookeeper. Then we determine which log need to be included in this incremental backup, and use DistCp to copy them to target location. At the same time, a dependency of backup image will be recorded, and later on saved in Backup Manifest file.

Restore is to replay the backuped WAL logs on target HBase instance. The replay will occur after full backup.

As incremental backup image depends on prior full backup image and incremental images if exists. Manifest file will be used to store the dependency lineage during backup, and used during restore time for PIT restore.

Use case(i.e example)

Incremental Backup Restore example

/*******************************************************************************************/
/* STEP1:  FULL backup from sourcecluster to targetcluster                  
/* if no table name specified, all tables from source cluster will be backuped 
/*******************************************************************************************/
[sourcecluster]$ hbase backup create full hdfs://hostname.targetcluster.org:9000/userid/backupdir t1_dn,t2_dn,t3_dn
...
14/05/09 13:35:46 INFO backup.BackupManager: Backup request backup_1399667695966 has been executed.
/*******************************************************************************************/
/* STEP2:   In HBase Shell, put a few rows                                                
/*******************************************************************************************/
hbase(main):002:0> put 't1_dn','row100','cf1:q1','value100_0509_increm1'
hbase(main):003:0> put 't2_dn','row100','cf1:q1','value100_0509_increm1'
hbase(main):004:0> put 't3_dn','row100','cf1:q1','value100_0509_increm1'

/*******************************************************************************************/
/* STEP3:   Take the 1st incremental backup                                            
/*******************************************************************************************/
[sourcecluster]$ hbase backup create incremental hdfs://hostname.targetcluster.org:9000/userid/backupdir
...
14/05/09 13:37:45 INFO backup.BackupManager: Backup request backup_1399667851020 has been executed.

/*******************************************************************************************/
/* STEP4:   In HBase Shell, put a few more rows.                                      
/*               update 'row100', and create new 'row101'                               
/*******************************************************************************************/
hbase(main):005:0> put 't3_dn','row100','cf1:q1','value101_0509_increm2'
hbase(main):006:0> put 't2_dn','row100','cf1:q1','value101_0509_increm2'
hbase(main):007:0> put 't1_dn','row100','cf1:q1','value101_0509_increm2'
hbase(main):009:0> put 't1_dn','row101','cf1:q1','value101_0509_increm2'
hbase(main):010:0> put 't2_dn','row101','cf1:q1','value101_0509_increm2'
hbase(main):011:0> put 't3_dn','row101','cf1:q1','value101_0509_increm2'

/*******************************************************************************************/
/* STEP5:   Take the 2nd incremental backup                                           
/*******************************************************************************************/
[sourcecluster]$ hbase backup create incremental hdfs://hostname.targetcluster.org:9000/userid/backupdir
...
14/05/09 13:39:33 INFO backup.BackupManager: Backup request backup_1399667959165 has been executed.

/*******************************************************************************************/
/* STEP7:   Restore from PIT of the 1st incremental backup                     
/* specified the backup ID of the 1st incremental                                      
/* option -automatic, will trigger the restore of full backup first, then 1st   
/* incremental backup image                                                                    
/* t1_dn,etc are the original table names. All tables will be restored if not specified         
/* t1_dn_restore, etc. are the restored table. if not specified, orginal table name will be used
/*******************************************************************************************/
[sourcecluster]$ hbase restore -automatic hdfs://hostname.targetcluster.org:9000/userid/backupdir backup_1399667851020 t1_dn,t2_dn,t3_dn t1_dn_restore1,t2_dn_restore1,t3_dn_restore1

/*******************************************************************************************/
/* STEP8:   Restore from PIT of the 2nd incremental backup                     
/* specified the backup ID of the 1st incremental                                       
/* option -automatic, will trigger the restore of full backup first, then 1st    
/* incremental backup image, and finally 2nd incremental backup image  
/*******************************************************************************************/
[sourcecluster]$ hbase restore -automatic hdfs://hostname.targetcluster.org:9000/userid/backupdir backup_1399667959165 t1_dn,t2_dn,t3_dn t1_dn_restore2,t2_dn_restore2,t3_dn_restore2

Patch history

Since this jira depends on HBASE-10900, for each version, two patches will be uploaded. One would be the real patch for this incremental-update jira; another patch will contain the depended patch, so that 1) easy to review; 2) can by applied by HadoopQA

• Version 1 (https://reviews.apache.org/r/21492/)
  • HBASE-11085-trunk-v1.patch: incremental update/restore code
  • HBASE-11085-trunk-v1-contains-HBASE-10900-trunk-v4.patch: contain both HBASE-11085-trunk-v1.patch and HBASE-10900-trunk-v4.patch

• Version 2
  • HBASE-11085-trunk-v2.patch : incremental. Add UT, address review comments and javadoc warnings
  • HBASE-11085-trunk-v2-contain-HBASE-10900-trunk-v4.patch : combined patch that can be applied directly to trunk

Issue Links

• is depended upon by: HBASE-11181 prune/delete old backups
• is part of: HBASE-7912 HBase Backup/Restore Based on HBase Snapshot
• is required by: HBASE-11172 Cancel a backup process
• is required by: HBASE-11173 Show Backup History
• is required by: HBASE-11174 show backup/restore progress
• requires: HBASE-10926 Use global procedure to flush table memstore cache
• requires: HBASE-10900 FULL table backup and restore