[HBASE-14653] Balancer is getting NullPointerExceptions

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Assignee: Elliott Neil Clark
• Reporter: Elliott Neil Clark
• Created: 20/Oct/15 02:18
• Updated: 20/Oct/15 02:28
• Resolved: 20/Oct/15 02:28

Description

ERROR: java.io.IOException
	at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2165)
	at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:106)
	at org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:130)
	at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:107)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
	at org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer$Cluster.getLeastLoadedTopServerForRegion(BaseLoadBalancer.java:847)
	at org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer$LocalityBasedCandidateGenerator.generate(StochasticLoadBalancer.java:609)
	at org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer.balanceCluster(StochasticLoadBalancer.java:267)
	at org.apache.hadoop.hbase.master.HMaster.balance(HMaster.java:1263)
	at org.apache.hadoop.hbase.master.MasterRpcServices.balance(MasterRpcServices.java:435)
	at org.apache.hadoop.hbase.protobuf.generated.MasterProtos$MasterService$2.callBlockingMethod(MasterProtos.java:53616)
	at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2120)
	... 4 more

Issue Links

• is duplicated by: HBASE-14291 NPE On StochasticLoadBalancer Balance Involving RS With No Regions