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https://issues.apache.org/jira/browse/HADOOP-12726?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15433670#comment-15433670
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Hudson commented on HADOOP-12726:
---------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #10332 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/10332/])
HADOOP-12726. Unsupported FS operations should throw (cdouglas: rev
c37346d0e3f9d39d0aec7a9c5bda3e9772aa969b)
* (edit)
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/ChecksumFileSystem.java
* (edit)
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/sftp/SFTPFileSystem.java
* (edit)
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/sink/RollingFileSystemSink.java
* (edit)
hadoop-common-project/hadoop-common/src/site/markdown/filesystem/filesystem.md
* (edit)
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/ftp/FTPFileSystem.java
* (edit)
hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3native/NativeS3FileSystem.java
* (edit)
hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3AFileSystem.java
* (edit)
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/ChecksumFs.java
> Unsupported FS operations should throw UnsupportedOperationException
> --------------------------------------------------------------------
>
> Key: HADOOP-12726
> URL: https://issues.apache.org/jira/browse/HADOOP-12726
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs
> Affects Versions: 2.7.1
> Reporter: Daniel Templeton
> Assignee: Daniel Templeton
> Fix For: 3.0.0-alpha1
>
> Attachments: HADOOP-12726.001.patch, HADOOP-12726.002.patch,
> HADOOP-12726.003.patch
>
>
> In the {{FileSystem}} implementation classes, unsupported operations throw
> {{new IOException("Not supported")}}, which makes it needlessly difficult to
> distinguish an actual error from an unsupported operation. They should
> instead throw {{new UnsupportedOperationException()}}.
> It's possible that this anti-idiom is used elsewhere in the code base. This
> JIRA should include finding and cleaning up those instances as well.
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