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https://issues.apache.org/jira/browse/HADOOP-12164?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14609262#comment-14609262
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Andrew Wang commented on HADOOP-12164:
--------------------------------------
LGTM +1 pending Jenkins
> Fix TestMove and TestFsShellReturnCode failed to get command name using
> reflection.
> -----------------------------------------------------------------------------------
>
> Key: HADOOP-12164
> URL: https://issues.apache.org/jira/browse/HADOOP-12164
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 2.7.0
> Reporter: Lei (Eddy) Xu
> Assignee: Lei (Eddy) Xu
> Priority: Minor
> Attachments: HADOOP-12164.000.patch
>
>
> When enabled {{hadoop.shell.missing.defaultFs.warning}}, a few tests were
> failed as following:
> {noformat}
> java.lang.RuntimeException: failed to get .NAME
> at java.lang.Class.getDeclaredField(Class.java:1948)
> at org.apache.hadoop.fs.shell.Command.getCommandField(Command.java:458)
> at org.apache.hadoop.fs.shell.Command.getName(Command.java:401)
> at
> org.apache.hadoop.fs.shell.FsCommand.getCommandName(FsCommand.java:80)
> at
> org.apache.hadoop.fs.shell.FsCommand.processRawArguments(FsCommand.java:111)
> at org.apache.hadoop.fs.shell.Command.run(Command.java:154)
> at
> org.apache.hadoop.fs.TestFsShellReturnCode.testChgrpGroupValidity(TestFsShellReturnCode.java:434)
> {noformat}
> The reason is that, in {{FsCommand#processRawArguments}}, it uses
> {{getCommandName()}}, which uses reflection to find {{static String NAME}}
> field, to build error message. But in the tests, the commands are built
> without {{static String NAME}} field, since it is not inherited.
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