[jira] [Updated] (HBASE-27390) getClusterMetrics NullPointerException when ServerTask status null

["Briana Augenreich (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-27390?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Briana Augenreich updated HBASE-27390:
--------------------------------------
    Status: Patch Available  (was: Open)

Patch available -> [https://github.com/apache/hbase/pull/4853] 

> getClusterMetrics NullPointerException when ServerTask status null
> ------------------------------------------------------------------
>
>                 Key: HBASE-27390
>                 URL: https://issues.apache.org/jira/browse/HBASE-27390
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Bryan Beaudreault
>            Assignee: Briana Augenreich
>            Priority: Major
>             Fix For: 2.6.0, 3.0.0-alpha-4, 2.5.3
>
>
> We had a situation where an hmaster had just started up and something started calling Admin.getClusterMetrics. It seems there were ServerTasks in memory, but at least one had no status. This resulted in a spam of NPE:
> {code:java}
> [RpcServer.default.FPBQ.Fifo.handler=29,queue=2,port=60000] ERROR org.apache.hadoop.hbase.ipc.RpcServer: Unexpected throwable object  
> java.lang.NullPointerException    
> at org.apache.hadoop.hbase.shaded.protobuf.generated.ClusterStatusProtos$ServerTask$Builder.setStatus(ClusterStatusProtos.java:14352)    
> at org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil.toServerTask(ProtobufUtil.java:3565)    
> at org.apache.hadoop.hbase.ClusterMetricsBuilder.lambda$toClusterStatus$4(ClusterMetricsBuilder.java:80)    
> at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)    
> at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655)    
> at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)    
> at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)    
> at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913)    
> at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)    
> at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578)    
> at org.apache.hadoop.hbase.ClusterMetricsBuilder.toClusterStatus(ClusterMetricsBuilder.java:80)    
> at org.apache.hadoop.hbase.master.MasterRpcServices.getClusterStatus(MasterRpcServices.java:980)    
> at org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos$MasterService$2.callBlockingMethod(MasterProtos.java)    
> at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:385)    
> at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:124)    
> at org.apache.hadoop.hbase.ipc.RpcHandler.run(RpcHandler.java:102)    
> at org.apache.hadoop.hbase.ipc.RpcHandler.run(RpcHandler.java:82) {code}



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