Xie Lei created HDFS-15561:
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Summary: Fix NullPointException when start dfsrouter
Key: HDFS-15561
URL: https://issues.apache.org/jira/browse/HDFS-15561
Project: Hadoop HDFS
Issue Type: Bug
Components: rbf
Affects Versions: 3.3.0
Reporter: Xie Lei
Fix For: 3.3.1
when start dfsrouter, it throw NPE
{code:java}
2020-09-08 19:41:14,989 ERROR
org.apache.hadoop.hdfs.server.federation.router.NamenodeHeartbeatService:
Unexpected exception while communicating with null:null:
java.net.UnknownHostException: null2020-09-08 19:41:14,989 ERROR
org.apache.hadoop.hdfs.server.federation.router.NamenodeHeartbeatService:
Unexpected exception while communicating with null:null:
java.net.UnknownHostException: nulljava.lang.IllegalArgumentException:
java.net.UnknownHostException: null at
org.apache.hadoop.security.SecurityUtil.buildTokenService(SecurityUtil.java:447)
at
org.apache.hadoop.hdfs.NameNodeProxies.createNonHAProxy(NameNodeProxies.java:171)
at
org.apache.hadoop.hdfs.NameNodeProxies.createProxy(NameNodeProxies.java:123) at
org.apache.hadoop.hdfs.NameNodeProxies.createProxy(NameNodeProxies.java:95) at
org.apache.hadoop.hdfs.server.federation.router.NamenodeHeartbeatService.getNamenodeStatusReport(NamenodeHeartbeatService.java:248)
at
org.apache.hadoop.hdfs.server.federation.router.NamenodeHeartbeatService.updateState(NamenodeHeartbeatService.java:205)
at
org.apache.hadoop.hdfs.server.federation.router.NamenodeHeartbeatService.periodicInvoke(NamenodeHeartbeatService.java:159)
at
org.apache.hadoop.hdfs.server.federation.router.PeriodicService$1.run(PeriodicService.java:178)
at
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:514)
at java.base/java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305)
at
java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:300)
at
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.base/java.lang.Thread.run(Thread.java:844)Caused by:
java.net.UnknownHostException: null ... 14 more
{code}
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