Guanghao Zhang created HBASE-16910:
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Summary: Avoid NPE when start StochasticLoadBalancer
Key: HBASE-16910
URL: https://issues.apache.org/jira/browse/HBASE-16910
Project: HBase
Issue Type: Bug
Components: Balancer
Affects Versions: 2.0.0
Reporter: Guanghao Zhang
Priority: Minor
When master start, it initialize StochasticLoadBalancer.
{code}
this.balancer.setClusterStatus(getClusterStatus());
this.balancer.setMasterServices(this);
{code}
It first setClusterStatus(), then setMasterService(). But in setClusterStatus
method, it use master service which is not initialized. So it will throw NPE.
```
int tablesCount = isByTable ? services.getTableDescriptors().getAll().size() :
1;
```
It happens when set isByTable is ture.
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