lujie created YARN-9589:
---------------------------
Summary: NPE in HttpURLConnection.disconnect
Key: YARN-9589
URL: https://issues.apache.org/jira/browse/YARN-9589
Project: Hadoop YARN
Issue Type: Bug
Reporter: lujie
{code:java}
2019-05-30 10:17:59,869 ERROR [IPC Server handler 2 on default port 51923]
org.apache.hadoop.mapred.TaskAttemptListenerImpl: Task:
attempt_1559182584278_0001_r_000000_0 - exited : java.lang.NullPointerException
at
sun.net.www.protocol.http.HttpURLConnection.disconnect(HttpURLConnection.java:2821)
at
org.apache.hadoop.mapreduce.task.reduce.Fetcher.closeConnection(Fetcher.java:255)
at org.apache.hadoop.mapreduce.task.reduce.Fetcher.interrupt(Fetcher.java:216)
at org.apache.hadoop.mapreduce.task.reduce.Fetcher.shutDown(Fetcher.java:224)
at org.apache.hadoop.mapreduce.task.reduce.Shuffle.run(Shuffle.java:147)
at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:377)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:178)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1891)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:172)
{code}
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