[jira] [Created] (HADOOP-13093) Discuss whether dfs -ls should escape control characters on terminal

["John Zhuge (JIRA)" <ji...@apache.org>]

John Zhuge created HADOOP-13093:
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             Summary: Discuss whether dfs -ls should escape control characters on terminal
                 Key: HADOOP-13093
                 URL: https://issues.apache.org/jira/browse/HADOOP-13093
             Project: Hadoop Common
          Issue Type: Bug
          Components: fs
            Reporter: John Zhuge
            Assignee: John Zhuge


HADOOP-13079 adds option {{-q}} to {{dfs -ls}} to print non-printable characters as "?". This jira will decide whether to make {{-q}} the default for {{dfs -ls}} on a terminal.

This is a split of HADOOP-13079. The split gives us more time to debate the proper default behavior and enables different target versions.

To test whether STDOUT is connected to a terminal, I will use {{System.console() != null}}, fully aware its limitation. JNI {{isatty(3)}} is possible but too problematic as pointed out by [~cmccabe].

I will survey FsShell and hdfs commands and their proper expected default behaviors. Thanks [~andrew.wang] for the suggestion. More jiras may follow.



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