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https://issues.apache.org/jira/browse/HBASE-10900?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14327973#comment-14327973
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Demai Ni commented on HBASE-10900:
----------------------------------
Due to personal reason, I can't work directly to contribute back to open source
community at this moment. Put this jira as 'unassigned', and remove fixed
version
hopefully, someone can pick it up. or Or my situation may change and I can
continue to work on this.
Thanks... Demai
> FULL table backup and restore
> -----------------------------
>
> Key: HBASE-10900
> URL: https://issues.apache.org/jira/browse/HBASE-10900
> Project: HBase
> Issue Type: Task
> Reporter: Demai Ni
> Attachments: HBASE-10900-fullbackup-trunk-v1.patch,
> HBASE-10900-trunk-v2.patch, HBASE-10900-trunk-v3.patch,
> HBASE-10900-trunk-v4.patch
>
>
> h2. Feature Description
> This is a subtask of
> [HBase-7912|https://issues.apache.org/jira/browse/HBASE-7912] to support FULL
> backup/restore, and will complete the following function:
> {code:title=Backup Restore example|borderStyle=solid}
> /* 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
> /* restore on targetcluser, this is a local restore
> */
> /* backup_1396650096738 - backup image name
> */
> /* 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*/
> [targetcluster]$ hbase restore /userid/backupdir backup_1396650096738
> t1_dn,t2_dn,t3_dn t1_dn_restore,t2_dn_restore,t3_dn_restore
> /* restore from targetcluster back to source cluster, this is a remote restore
> [sourcecluster]$ hbase restore
> hdfs://hostname.targetcluster.org:9000/userid/backupdir backup_1396650096738
> t1_dn,t2_dn,t3_dn t1_dn_restore,t2_dn_restore,t3_dn_restore
> {code}
> h2. Detail layout and frame work for the next jiras
> The patch is a wrapper of the existing snapshot and exportSnapshot, and will
> use as the base framework for the over-all solution of
> [HBase-7912|https://issues.apache.org/jira/browse/HBASE-7912] as described
> below:
> * *bin/hbase* : end-user command line interface to invoke
> BackupClient and RestoreClient
> * *BackupClient.java* : 'main' entry for backup operations. This patch will
> only support 'full' backup. In future jiras, will support:
> ** *create* incremental backup
> ** *cancel* an ongoing backup
> ** *delete* an exisitng backup image
> ** *describe* the detailed informaiton of backup image
> ** show *history* of all successful backups
> ** show the *status* of the latest backup request
> ** *convert* incremental backup WAL files into HFiles. either on-the-fly
> during create or after create
> ** *merge* backup image
> ** *stop* backup a table of existing backup image
> ** *show* tables of a backup image
> * *BackupCommands.java* : a place to keep all the command usages and options
> * *BackupManager.java* : handle backup requests on server-side, create
> BACKUP ZOOKEEPER nodes to keep track backup. The timestamps kept in zookeeper
> will be used for future incremental backup (not included in this jira).
> Create BackupContext and DispatchRequest.
> * *BackupHandler.java* : in this patch, it is a wrapper of snapshot and
> exportsnapshot. In future jiras,
> ** *timestamps* info will be recorded in ZK
> ** carry on *incremental* backup.
> ** update backup *progress*
> ** set flags of *status*
> ** build up *backupManifest* file(in this jira only limited info for
> fullback. later on, timestamps and dependency of multipl backup images are
> also recorded here)
> ** clean up after *failed* backup
> ** clean up after *cancelled* backup
> ** allow on-the-fly *convert* during incremental backup
> * *BackupContext.java* : encapsulate backup information like backup ID, table
> names, directory info, phase, TimeStamps of backup progress, size of data,
> ancestor info, etc.
> * *BackupCopier.java* : the copying operation. Later on, to support
> progress report and mapper estimation; and extends DisCp for progress
> updating to ZK during backup.
> * *BackupExcpetion.java*: to handle exception from backup/restore
> * *BackupManifest.java* : encapsulate all the backup image information. The
> manifest info will be bundled as manifest file together with data. So that
> each backup image will contain all the info needed for restore.
> * *BackupStatus.java* : encapsulate backup status at table level during
> backup progress
> * *BackupUtil.java* : utility methods during backup process
> * *RestoreClient.java* : 'main' entry for restore operations. This patch
> will only support 'full' backup.
> * *RestoreUtil.java* : utility methods during restore process
> * *ExportSnapshot.java* : remove 'final' so that another class
> SnapshotCopy.java can extends from it
> * *SnapshotCopy.java* : only a wrapper at this moment. But will be extended
> to keep track progress(maybe should implemented in ExportSnapshot directly?)
> * *BackupRestoreConstants.java* : add the constants used by
> backup/restore code.
> * *HBackupFilesystem.java* : the filesystem related api used by
> BackupClient and RestoreClient.
> h2. Global log roll
> currently a customized one under *org.apache.hadoop.hbase.backup.master* and
> *org.apache.hadoop.hbase.backup.regionserver*
> [HBASE-11148|https://issues.apache.org/jira/browse/HBASE-11148] is opened to
> provide a general 'global log roll', and fullbackup code will be modified to
> use the general 'global log roll' later once HBase-11148 is accepted by the
> community.
> h2. Interface
> * currently, the code is under *hbase-sever* because it already contain a
> package name called 'backup'. If move to *hbase-client*, the pom file has to
> be updated to include more dependency
> * currently invoke through script bin/hbase as CLI interface. One advantage
> is easy to embed into a linux sh script
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