.DataNode
and attempts to spread data across all volumes evenly.See: Description
Enum | Description |
---|---|
DiskBalancerException.Result |
Results returned by the RPC layer of DiskBalancer.
|
Exception | Description |
---|---|
DiskBalancerException |
Disk Balancer Exceptions.
|
.DataNode
and attempts to spread data across all volumes evenly.
This is achieved by :
1) Calculating the average data that should be on a set of volumes grouped
by the type. For example, how much data should be on each volume of SSDs on a
machine.
2) Once we know the average data that is expected to be on a volume we
move data from volumes with higher than average load to volumes with
less than average load.
3) Disk Balancer operates against data nodes which are live and operational.Copyright © 2008–2023 Apache Software Foundation. All rights reserved.