[jira] [Created] (HADOOP-13239) Deprecate s3:// in branch-2

["Mingliang Liu (JIRA)" <ji...@apache.org>]

Mingliang Liu created HADOOP-13239:
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             Summary: Deprecate s3:// in branch-2
                 Key: HADOOP-13239
                 URL: https://issues.apache.org/jira/browse/HADOOP-13239
             Project: Hadoop Common
          Issue Type: Improvement
          Components: fs/s3
    Affects Versions: 2.8.0
            Reporter: Mingliang Liu
            Assignee: Mingliang Liu


The fact that s3:// was broken in Hadoop 2.7 *and nobody noticed until now* shows that it's not being used. while invaluable at the time, s3n and especially s3a render it obsolete except for reading existing data.

I propose

# Mark Java source as {{@deprecated}}
# Warn the first time in a JVM that an S3 instance is created, "deprecated -will be removed in future releases"
# in Hadoop trunk we really cut it. Maybe have an attic project (external?) which holds it for anyone who still wants it. Or: retain the code but remove the {{fs.s3.impl}} config option, so you have to explicitly add it for use.



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