[jira] [Commented] (HDFS-9594) DataNode threw NullPointerException
[
https://issues.apache.org/jira/browse/HDFS-9594?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15604495#comment-15604495
]
SammiChen commented on HDFS-9594:
-
I think this Null pointer exception is because one data node is killed during
the test. Therefore, it can be a normal situation.
> 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-alpha1
> 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)
> {noformat}
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[jira] [Commented] (HDFS-9594) DataNode threw NullPointerException
[
https://issues.apache.org/jira/browse/HDFS-9594?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15568384#comment-15568384
]
Wei-Chiu Chuang commented on HDFS-9594:
---
Maybe it's related to test failures in HDFS-10935
> 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-alpha1
> 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)
> {noformat}
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[jira] [Commented] (HDFS-9594) DataNode threw NullPointerException
[
https://issues.apache.org/jira/browse/HDFS-9594?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15568382#comment-15568382
]
Wei-Chiu Chuang commented on HDFS-9594:
---
I saw the same NPE when running tests in TestFileChecksum, and the NPE is
reproducible consistently. (I run the tests on Mac)
> 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-alpha1
> 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)
> {noformat}
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