Master holding pattern
Know how to troubleshoot issues related to the Master holding patterns.
Condition
Master startup waits for the region assignments (namespace/meta).
Cause
Regions are not assigned due to inconsistencies.
As a result, the Master startup cannot progress in holding-pattern until the region is online.
Remedy
Run the following command to fix the issue.
hbase hbck -j <hbck2-jar> assigns <region-id>