[HBASE-17758] [RSGROUP] Add shell command to move servers and tables at the same time

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0
• Fix Version/s: 2.0.0
• Component/s: rsgroup
• Hadoop Flags: Reviewed
• Assignee: Guangxu Cheng
• Reporter: Guangxu Cheng
• Created: 08/Mar/17 07:44
• Updated: 06/Jul/17 01:43
• Resolved: 17/Mar/17 21:14

Description

Currently add a new group perform the following steps:

hbase(main):001:0> add_rsgroup 'mygroup'
Took 0.3840 seconds
hbase(main):002:0> move_servers_rsgroup 'mygroup',['hbase-rs-01:16030','hbase-rs-02:16030']
Took 3.5040 seconds
hbase(main):003:0> move_tables_rsgroup 'mygroup',['example']
Took 0.2710 seconds

1. move_servers_rsgroup will unassign all regions on hbase-rs-01 and hbase-rs-02
2. move_tables_rsgroup will also reassign all the regions of the table example.

This will lead to a large number of regions to migrate and affect the data locality.

However, some regions of the table that are distributed on hbase-rs-01 and hbase-rs-02, do not need to be moved.

So,we need a new shell command move_servers_tables_rsgroup which minimizes the number of regions needed to move.

Issue Links

• is related to: HBASE-15631 Backport Regionserver Groups (HBASE-6721) to branch-1