[HADOOP-13239] Deprecate s3:// in branch-2

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.8.0
• Fix Version/s: 2.8.0
• Component/s: fs/s3
• Assignee: Mingliang Liu
• Reporter: Mingliang Liu
• Created: 06/Jun/16 02:01
• Updated: 01/Aug/16 19:32
• Resolved: 29/Jun/16 13:10

Description

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.

HADOOP-12709 cuts the s3:// from trunk branch, and this JIRA ticket is to deprecate it from branch-2.

1. Mark Java source as @deprecated
2. Warn the first time in a JVM that an S3 instance is created, "deprecated -will be removed in future releases"

Thanks Steve Loughran for the proposal.

Issue Links

• breaks: HADOOP-13387 users always get told off for using S3 —even when not using it.
• is a clone of: HADOOP-12709 Cut s3:// from trunk
• is depended upon by: HADOOP-11694 Über-jira: S3a phase II: robustness, scale and performance
• is related to: HADOOP-12815 TestS3ContractRootDir#testRmEmptyRootDirNonRecursive and TestS3ContractRootDir#testRmRootRecursive fail on branch-2.