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https://issues.apache.org/jira/browse/HDFS-15561?focusedWorklogId=590839&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-590839
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ASF GitHub Bot logged work on HDFS-15561:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 29/Apr/21 05:37
Start Date: 29/Apr/21 05:37
Worklog Time Spent: 10m
Work Description: fengnanli commented on pull request #2954:
URL: https://github.com/apache/hadoop/pull/2954#issuecomment-828952579
@Hexiaoqiao I fixed the tests and it is not related with this jira though.
Let me know if want me to create a separate task or just piggyback here since
it is a one-liner fix.
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Issue Time Tracking
-------------------
Worklog Id: (was: 590839)
Time Spent: 2h 40m (was: 2.5h)
> RBF: 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
> Assignee: Fengnan Li
> Priority: Major
> Labels: pull-request-available
> Time Spent: 2h 40m
> Remaining Estimate: 0h
>
> 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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