[
https://issues.apache.org/jira/browse/HBASE-26550?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Josh Elser updated HBASE-26550:
-------------------------------
Description:
Noticed this in a unit test from [https://github.com/apache/hbase/pull/3851]
I believe this is a result of the new balance() implementation in the Master,
and a client submitting a request to the master before it's completed its
instantiation. Simple fix to avoid the NPE.
{noformat}
Failed after attempts=2, exceptions:
2021-12-07T18:14:19.203Z, java.io.IOException: java.io.IOException
at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:461)
at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:138)
at
org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:354)
at
org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:334)
Caused by: java.lang.NullPointerException
at
org.apache.hadoop.hbase.master.HMaster.getProcedures(HMaster.java:3335)
at
org.apache.hadoop.hbase.master.ServerManager.areDeadServersInProgress(ServerManager.java:505)
at org.apache.hadoop.hbase.master.HMaster.balance(HMaster.java:1886)
at
org.apache.hadoop.hbase.master.MasterRpcServices.balance(MasterRpcServices.java:740)
at
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos$MasterService$2.callBlockingMethod(MasterProtos.java)
at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:393)
... 3 more {noformat}
was:
Noticed this in a unit test from [https://github.com/apache/hbase/pull/3851]
I believe this is a result of the new balance() implementation in the Master,
and a client submitting a request to the master before it's completed its
instantiation. Simple fix to avoid the NPE.
> NPE if balance request comes in before master is initialized
> ------------------------------------------------------------
>
> Key: HBASE-26550
> URL: https://issues.apache.org/jira/browse/HBASE-26550
> Project: HBase
> Issue Type: Bug
> Components: Balancer, master
> Reporter: Josh Elser
> Assignee: Josh Elser
> Priority: Minor
> Fix For: 3.0.0-alpha-2
>
>
> Noticed this in a unit test from [https://github.com/apache/hbase/pull/3851]
> I believe this is a result of the new balance() implementation in the Master,
> and a client submitting a request to the master before it's completed its
> instantiation. Simple fix to avoid the NPE.
> {noformat}
> Failed after attempts=2, exceptions:
> 2021-12-07T18:14:19.203Z, java.io.IOException: java.io.IOException
> at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:461)
> at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:138)
> at
> org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:354)
> at
> org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:334)
> Caused by: java.lang.NullPointerException
> at
> org.apache.hadoop.hbase.master.HMaster.getProcedures(HMaster.java:3335)
> at
> org.apache.hadoop.hbase.master.ServerManager.areDeadServersInProgress(ServerManager.java:505)
> at org.apache.hadoop.hbase.master.HMaster.balance(HMaster.java:1886)
> at
> org.apache.hadoop.hbase.master.MasterRpcServices.balance(MasterRpcServices.java:740)
> at
> org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos$MasterService$2.callBlockingMethod(MasterProtos.java)
> at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:393)
> ... 3 more {noformat}
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