Why it matters

Advanced HBase issues require systematic diagnosis. Understanding shapes production reliability.

Advertisement

The architecture

RIT: regions stuck between servers.

Compaction storm: many regions compacting.

Master failures.

Deep issuesRegions in transitionstuck assignmentsCompaction stormmany regionsMaster failureselection issueshbck / hbck2: repair tools; use with care
Deep issues categories.
Advertisement

How it works end to end

hbck / hbck2: HBase check + repair. Powerful but risky.

Compaction storm: throttle compaction, schedule during off-peak.

Master election: check ZooKeeper.

Escalation: know when to call for help.