[SQOOP-2454] Drop JDK6 support

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.4.6, 1.99.6
• Fix Version/s: 1.99.7, 1.4.7
• Assignee: Jarek Jarcec Cecho
• Reporter: Jarek Jarcec Cecho
• Created: 31/Jul/15 15:33
• Updated: 12/Aug/15 10:12
• Resolved: 05/Aug/15 02:36

Description

Following our mailing list discussion:

JDK6 has been officially put end of life by Oracle more then 2 years ago
(February 2013). Other projects in Hadoop ecosystems have already dropped JDK6 support - for example Hadoop [1], HBase [2] or Pig[3] and hence I would like to kick off discussion to do the same in Sqoop as well.

What exactly that would mean for our users:

• User would need to use at least JDK7 on the runtime - we’re spawning mapreduce job, so entire cluster would have to be running on at least JDK7

What would that mean for Sqoop developers:

• We would change our build scripts to use -source and -target 1.7 [4] preventing the compilation with JDK6
• We could use JDK7 specific language features in the source code [5]

Links:
1: http://markmail.org/thread/ytisa4w73ym4ee65
2: https://issues.apache.org/jira/browse/HBASE-11666
3: http://markmail.org/message/4pdyv22bimh5ae7n
4: http://docs.oracle.com/javase/7/docs/technotes/tools/windows/javac.html
5:
http://docs.oracle.com/javase/7/docs/technotes/guides/language/enhancements.html