Thanks Vladimir for the write up and the work. Glad to see progress. Here is my +1. I'm pretty sure we can get the blockers in before the 2.0 timeframe with the momentum, so it is a good idea to merge now so that development can continue in master, and there is more exposure for testing, etc.
Enis On Wed, Mar 8, 2017 at 1:32 PM, Vladimir Rodionov <vladrodio...@gmail.com> wrote: > Hello, HBase folks > > For your consideration today is Backup/Restore feature for Apache HBAse > 2.0. > Backup code is available as a mega patch in HBASE-14123 (v61), applies > cleanly to the current master, all test PASS, patch has no other issues. > > The patch has gone through numerous rounds of code reviews and has probably > the most lengthy discussion thread on Apache JIRA (HBASE-14123) :) > > The work has been split into 3 phases (HBASE-14030, 14123, 14414) Two first > are complete, third one is still in progress. > > > *** Summary of work HBASE-14123 > > The new feature introduces new command-line extensions to the hbase command > and, from the client side, is accessible through command-line only > Operations: > * Create full backup on a list of tables or backup set > * Create incremental backup image for table list or backup set > * Restore list of tables from a given backup image > * Show current backup progress > * Delete backup image and all related images > * Show history of backups > * Backup set operations: create backup set, add/remove table to/from backup > set, etc > > In the current implementation, the feature is already usable, meaning that > users can backup tables and restore them using provided command-line tools. > Both: full and incremental backups are supported. > This work is based on original work of IBM team (HBASE-7912). The full list > of JIRAs included in this mega patch can be found in three umbrella JIRAs: > HBASE-14030 (Phase 1), HBASE-14123 (Phase 2) and HBASE-14414 (Phase 3 - all > resolved ones made it into the patch) > > *** What are the remaining work items > > All remaining items can be found in Phase 3 umbrella JIRA: HBASE-14414. > They are split into 3 groups: BLOCKER, CRITICAL, MAJOR > Only BLOCKERs and CRITICALs are guaranteed for HBase 2.0 release. > > ***** BLOCKER > > * HBASE-14417 Incremental backup and bulk loading ( Patch available) > * HBASE-14135 HBase Backup/Restore Phase 3: Merge backup images > * HBASE-14141 HBase Backup/Restore Phase 3: Filter WALs on backup to > include only edits from backup tables (Patch available) > * HBASE-17133 Backup documentation > * HBASE-15227 Fault tolerance support > > ***** CRITICAL > > * HBASE-16465 Disable split/merges during backup > > We have umbrella JIRA (HBASE-14414) to track all the remaining work > All the BLOCKER and CRITICAL JIRAs currently in open state will be > implemented by 2.0 release time. Some MAJOR too, but it depends on resource > availability > The former development branch (HBASE-7912) is obsolete and will be > closed/deleted after the merge. > We want backup to be a GA feature in 2.0 > We are going to support full backward compatibility for backup tool in 2.0 > and onwards. > > **** Configuration > > Backup is disabled, by default. To enable it, the following configuration > properties must be added to hbase-site.xml: > > hbase.backup.enable=true > hbase.master.logcleaner.plugins=YOUR_PLUGINS,org. > apache.hadoop.hbase.backup.master.BackupLogCleaner > hbase.procedure.master.classes=YOUR_CLASSES,org. > apache.hadoop.hbase.backup.master.LogRollMasterProcedureManager > hbase.procedure.regionserver.classes=YOUR_CLASSES,org. > apache.hadoop.hbase.backup.regionserver.LogRollRegionServerProcedureMa > nager > > > I would like to thank IBM team and Jerry He for original work, > > Enis, Ted, Stack, Matteo, Jerry for time spent on code reviews > > Special thanks to Ted Yu for his co-development work. > > References: > > https://issues.apache.org/jira/browse/HBASE-7912 (original IBM, contains > design doc) > https://issues.apache.org/jira/browse/HBASE-14030 (Phase 1) > https://issues.apache.org/jira/browse/HBASE-14123 (Phase 2) > https://issues.apache.org/jira/browse/HBASE-14414 (Phase 3) > > Please vote +1/-1 by midnight Pacific Time (00:00 > -0800 GMT) on March 11th on whether or not we should merge this into the > current master. > > -Vladimir Rodionov >
