Description
On master failover or a full cluster restart, we create the RegionLocationFinder cache by calculating block locations for every region; this cache is used by the balancer for calculating region locality. This greatly increases the time it takes for the assignment manager to start and affects region availability in scenarios of full cluster restart.
We should initialize assignment manager with the bare minimum information and asynchronously load the block location cache.
Attachments
Issue Links
- duplicates
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HBASE-16570 Compute region locality in parallel at startup
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- Closed
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