[HBASE-13610] Backport HBASE-13222 (Provide means of non-destructive balancer inspection) to 0.98

• Type: Task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.98.13
• Hadoop Flags: Reviewed
• Assignee: Andrew Kyle Purtell
• Reporter: Andrew Kyle Purtell
• Created: 01/May/15 23:45
• Updated: 20/Nov/15 11:55
• Resolved: 04/May/15 00:28

Description

We have an internal user who wanted a facility like this during a recent upgrade.
On HBASE-13222 elserj said:

I've dropped 0.98 from the fixVersions since the patch ended up being much more intrusive than Nicks initial patch.

I skimmed the V3 patch (https://issues.apache.org/jira/secure/attachment/12707615/HBASE-13222-v3.patch) and the essential change is an Admin API addition public boolean isBalancerOn(), and a new shell command, both of which we can do in 0.98 minors. Going to port back those parts.

Issue Links

• is related to: HBASE-13222 Provide means of non-destructive balancer inspection