Wei-Chiu Chuang created HDFS-9594:
-------------------------------------
Summary: DataNode threw NullPointerException
Key: HDFS-9594
URL: https://issues.apache.org/jira/browse/HDFS-9594
Project: Hadoop HDFS
Issue Type: Bug
Components: datanode
Affects Versions: 3.0.0
Environment: Jenkins
Reporter: Wei-Chiu Chuang
Assignee: Wei-Chiu Chuang
In a precommit jenkins, I saw multiple exceptions.
https://builds.apache.org/job/PreCommit-HDFS-Build/13984/testReport/org.apache.hadoop.hdfs/TestDFSShell/testSymLinkReserved/
One of which is a null pointer exception in datanode.
{noformat}
2015-12-23 13:26:50,337 [DataNode:
[[[DISK]file:/testptch/hadoop/hadoop-hdfs-project/hadoop-hdfs/target/test/data/1/dfs/data/data1/,
[DISK]file:/testptch/hadoop/hadoop-hdfs-project/hadoop-hdfs/target/test/data/1/dfs/data/data2/]]
heartbeating to localhost/127.0.0.1:38151] WARN datanode.DataNode
(BPServiceActor.java:run(859)) - Unexpected exception in block pool Block pool
BP-1060337608-172.17.0.3-1450877209942 (Datanode Uuid
6b120576-5c02-402f-ab38-079295bda597) service to localhost/127.0.0.1:38151
java.lang.NullPointerException
at
org.apache.hadoop.hdfs.server.datanode.DataNode.bpRegistrationSucceeded(DataNode.java:1391)
at
org.apache.hadoop.hdfs.server.datanode.BPOfferService.registrationSucceeded(BPOfferService.java:360)
at
org.apache.hadoop.hdfs.server.datanode.BPServiceActor.register(BPServiceActor.java:796)
at
org.apache.hadoop.hdfs.server.datanode.BPServiceActor.connectToNNAndHandshake(BPServiceActor.java:231)
at
org.apache.hadoop.hdfs.server.datanode.BPServiceActor.run(BPServiceActor.java:829)
at java.lang.Thread.run(Thread.java:745)
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