TestCustomSaslAuthenticationProvider failing in nightlies

2020-01-22 21:15:57,250 DEBUG [hconnection-0x5f0ea4c6-metaLookup-shared--pool15-t14] client.RpcRetryingCallerImpl(132): Call exception, tries=10, retries=16, started=38409 ms ago, cancelled=false, msg=Call to a8b44f950ced/172.17.0.3:42595 failed on local exception: java.io.IOException: java.lang.NullPointerException, details=row 'testPositiveAuthentication,r1,99999999999999' on table 'hbase:meta' at region=hbase:meta,,1.1588230740, hostname=a8b44f950ced,42595,1579726988645, seqNum=-1, see https://s.apache.org/timeout, exception=java.io.IOException: Call to a8b44f950ced/172.17.0.3:42595 failed on local exception: java.io.IOException: java.lang.NullPointerException
	at sun.reflect.GeneratedConstructorAccessor40.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at org.apache.hadoop.hbase.ipc.IPCUtil.wrapException(IPCUtil.java:220)
	at org.apache.hadoop.hbase.ipc.AbstractRpcClient.onCallFinished(AbstractRpcClient.java:378)
	at org.apache.hadoop.hbase.ipc.AbstractRpcClient.access$100(AbstractRpcClient.java:91)
	at org.apache.hadoop.hbase.ipc.AbstractRpcClient$3.run(AbstractRpcClient.java:409)
	at org.apache.hadoop.hbase.ipc.AbstractRpcClient$3.run(AbstractRpcClient.java:405)
	at org.apache.hadoop.hbase.ipc.Call.callComplete(Call.java:117)
	at org.apache.hadoop.hbase.ipc.Call.setException(Call.java:132)
	at org.apache.hadoop.hbase.ipc.AbstractRpcClient.callMethod(AbstractRpcClient.java:422)
	at org.apache.hadoop.hbase.ipc.AbstractRpcClient.callBlockingMethod(AbstractRpcClient.java:316)
	at org.apache.hadoop.hbase.ipc.AbstractRpcClient.access$200(AbstractRpcClient.java:91)
	at org.apache.hadoop.hbase.ipc.AbstractRpcClient$BlockingRpcChannelImplementation.callBlockingMethod(AbstractRpcClient.java:571)
	at org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos$ClientService$BlockingStub.scan(ClientProtos.java:42810)
	at org.apache.hadoop.hbase.client.ScannerCallable.openScanner(ScannerCallable.java:332)
	at org.apache.hadoop.hbase.client.ScannerCallable.rpcCall(ScannerCallable.java:242)
	at org.apache.hadoop.hbase.client.ScannerCallable.rpcCall(ScannerCallable.java:58)
	at org.apache.hadoop.hbase.client.RegionServerCallable.call(RegionServerCallable.java:127)
	at org.apache.hadoop.hbase.client.RpcRetryingCallerImpl.callWithoutRetries(RpcRetryingCallerImpl.java:192)
	at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas$RetryingRPC.call(ScannerCallableWithReplicas.java:396)
	at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas$RetryingRPC.call(ScannerCallableWithReplicas.java:370)
	at org.apache.hadoop.hbase.client.RpcRetryingCallerImpl.callWithRetries(RpcRetryingCallerImpl.java:107)
	at org.apache.hadoop.hbase.client.ResultBoundedCompletionService$QueueingFuture.run(ResultBoundedCompletionService.java:80)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.io.IOException: java.lang.NullPointerException
	at org.apache.hadoop.hbase.ipc.IPCUtil.toIOE(IPCUtil.java:154)
	... 17 more
Caused by: java.lang.NullPointerException
	at org.apache.hadoop.hbase.security.provider.BuiltInProviderSelector.selectProvider(BuiltInProviderSelector.java:128)
	at org.apache.hadoop.hbase.security.provider.TestCustomSaslAuthenticationProvider$InMemoryProviderSelector.selectProvider(TestCustomSaslAuthenticationProvider.java:390)
	at org.apache.hadoop.hbase.security.provider.SaslClientAuthenticationProviders.selectProvider(SaslClientAuthenticationProviders.java:214)
	at org.apache.hadoop.hbase.ipc.RpcConnection.<init>(RpcConnection.java:106)
	at org.apache.hadoop.hbase.ipc.BlockingRpcConnection.<init>(BlockingRpcConnection.java:219)
	at org.apache.hadoop.hbase.ipc.BlockingRpcClient.createConnection(BlockingRpcClient.java:72)
	at org.apache.hadoop.hbase.ipc.BlockingRpcClient.createConnection(BlockingRpcClient.java:38)
	at org.apache.hadoop.hbase.ipc.AbstractRpcClient.getConnection(AbstractRpcClient.java:350)
	at org.apache.hadoop.hbase.ipc.AbstractRpcClient.callMethod(AbstractRpcClient.java:419)
	... 16 more