[HBASE-24885] STUCK RIT by hbck2 assigns

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha-1, 2.2.3
• Fix Version/s: 3.0.0-alpha-1, 2.4.0, 2.2.7, 2.3.2
• Component/s: hbck2, Region Assignment
• Hadoop Flags: Reviewed
• Assignee: Michael Stack
• Reporter: Bo Cui
• Created: 15/Aug/20 03:08
• Updated: 11/Apr/21 09:07
• Resolved: 24/Aug/20 16:23

Description

If a region has been assign to rs1 and then client assigns region again by "hbck2 assigns"

1、if  regionPlan is region to be assign to rs2，the region will be opened on rs1 and rs2.

master log:

WARN org.apache.hadoop.hbase.master.assignment.AssignmentManager: rit=OPEN, location=rs2, table=tableName, region=reionName reported OPEN on server=rs1 but state has otherwise

2、if regionPlan is region to be assign to rs1， the TransitRegionStateProcedure and OpenRegionProcedure will stuck. because rs1 is not responding to master
rslog:

Receiving OPEN for the region:{}, which we are already trying to OPEN - ignoring this new request for this region.

 

Issue Links

• is related to: HBASE-25606 Backporting HBASE-24885 to branch-2.2
• is related to: HBASE-25607 [HBCK2] New check to prevent assign of already opened regions
• links to: GitHub Pull Request #2283
• links to: GitHub Pull Request #2989