[HADOOP-12709] Cut s3:// from trunk - ASF JIRA

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Details

Type: Improvement
Status: Resolved
Priority: Major
Resolution: Fixed
Affects Version/s: 3.0.0-alpha1
Fix Version/s: 3.0.0-alpha1
Component/s: fs/s3
Labels:
None

Target Version/s:

3.0.0-alpha1
Hadoop Flags:

Incompatible change
Release Note:
The s3 file system has been removed. The s3a file system should be used instead.

Description

UPDATE: This JIRA ticket is to track the effort of cutting the s3:// from trunk branch. Please see the cloned JIRA ticket ~~HADOOP-13239~~ for deprecating s3:// from branch-2.

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.