[HBASE-22013] SpaceQuotas - getNumRegions() returning wrong number of regions due to region replicas

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0-alpha-1, 2.3.0, 2.1.7, 2.2.2
• Labels: Quota Space
• Hadoop Flags: Reviewed
• Assignee: Shardul Singh
• Reporter: Ajeet Rai
• Created: 08/Mar/19 05:32
• Updated: 16/Oct/19 09:59
• Resolved: 09/Sep/19 16:28

Description

Space Quota: Space Quota Issue: If a table is created with region replica then quota calculation is not happening

Steps:

1: Create a table with 100 regions with region replica 3

2: Observe that 'hbase:quota' table doesn't have entry of usage for this table So In UI only policy Limit and Policy is shown but not Usage and State.

Reason:

It looks like File system utilization core is sending data of 100 reasons but not the size of region replicas.

But in quota observer chore, it is considering total region(actual regions+ replica reasons)

So the ratio of reported regions is less then configured percentRegionsReportedThreshold.
SO quota calculation is not happening

Issue Links

• is blocked by: HBASE-22895 Fix the flakey TestSpaceQuotas
• links to: GitHub Pull Request #570