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https://issues.apache.org/jira/browse/HDFS-13868?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16620440#comment-16620440
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Hudson commented on HDFS-13868:
-------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #15010 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/15010/])
HDFS-13868. WebHDFS: GETSNAPSHOTDIFF API NPE when param "snapshotname"
(weichiu: rev 28ceb34a725cd06d28fb51361c49bb45464f5368)
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestSnapshotDiffReport.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSClient.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/DirectorySnapshottableFeature.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/web/TestWebHDFS.java
> WebHDFS: GETSNAPSHOTDIFF API NPE when param "snapshotname" is given but
> "oldsnapshotname" is not.
> -------------------------------------------------------------------------------------------------
>
> Key: HDFS-13868
> URL: https://issues.apache.org/jira/browse/HDFS-13868
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs, webhdfs
> Affects Versions: 3.1.0, 3.0.3
> Reporter: Siyao Meng
> Assignee: Pranay Singh
> Priority: Major
> Fix For: 3.2.0, 3.0.4, 3.1.2
>
> Attachments: HDFS-13868.001.patch, HDFS-13868.002.patch,
> HDFS-13868.003.patch, HDFS-13868.004.patch, HDFS-13868.branch-3.0.001.patch
>
>
> HDFS-13052 implements GETSNAPSHOTDIFF for WebHDFS.
>
> Proof:
> {code:java}
> # Bash
> # Prerequisite: You will need to create the directory "/snapshot",
> allowSnapshot() on it, and create a snapshot named "snap3" for it to reach
> NPE.
> $ curl
> "http://<SERVER>:<PORT>/webhdfs/v1/snaptest/?op=GETSNAPSHOTDIFF&user.name=hdfs&oldsnapshotnameZZZ=snap2&snapshotname=snap3"
> # Note that I intentionally typed the wrong parameter name for
> "oldsnapshotname" above to cause NPE.
> {"RemoteException":{"exception":"NullPointerException","javaClassName":"java.lang.NullPointerException","message":null}}
> # OR
> $ curl
> "http://<SERVER>:<PORT>/webhdfs/v1/snaptest/?op=GETSNAPSHOTDIFF&user.name=hdfs&oldsnapshotname=&snapshotname=snap3"
> # Empty string for oldsnapshotname
> {"RemoteException":{"exception":"NullPointerException","javaClassName":"java.lang.NullPointerException","message":null}}
> # OR
> $ curl
> "http://<SERVER>:<PORT>/webhdfs/v1/snaptest/?op=GETSNAPSHOTDIFF&user.name=hdfs&snapshotname=snap3"
> # Missing param oldsnapshotname, essentially the same as the first case.
> {"RemoteException":{"exception":"NullPointerException","javaClassName":"java.lang.NullPointerException","message":null}{code}
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