[HBASE-12891] Parallel execution for Hbck checkRegionConsistency

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.98.10, 1.1.0, 2.0.0
• Fix Version/s: 1.1.0, 0.98.12, 2.0.0
• Component/s: hbck
• Labels: performance scalability
• Hadoop Flags: Reviewed
• Assignee: Dave Latham
• Reporter: churro morales
• Created: 21/Jan/15 00:29
• Updated: 03/Jun/15 15:28
• Resolved: 02/Apr/15 20:39

Description

We have a lot of regions on our cluster ~500k and noticed that hbck took quite some time in checkAndFixConsistency(). davelatham patched our cluster to do this check in parallel to speed things up. I'll attach the patch.