内容简介：以1.4.9版本为例，默认balance策略是开启状态。如果关闭，在Ui会出现如下警告：The Load Balancer is not enabled which will eventually cause performance degradation in HBase as Regions will not be distributed across all RegionServers. The balancer is only expected to be disabled during rolli
（一）均衡操作
以1.4.9版本为例，默认balance策略是开启状态。如果关闭，在Ui会出现如下警告：
The Load Balancer is not enabled which will eventually cause performance degradation in HBase as Regions will not be distributed across all RegionServers. The balancer is only expected to be disabled during rolling upgrade scenarios.
具体操作命令：
balancer_enabled：查看自动均衡是否开启
balance_switch true：开启
balance_switch false：关闭
balancer：进行一次均衡
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Michael Mikowski、Josh Powell / Manning Publications / 2013-9-30 / USD 44.99
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