Dongjoon Hyun b5f02d6743 [SPARK-13583][CORE][STREAMING] Remove unused imports and add checkstyle rule ... ## What changes were proposed in this pull request? After SPARK-6990, `dev/lint-java` keeps Java code healthy and helps PR review by saving much time. This issue aims remove unused imports from Java/Scala code and add `UnusedImports` checkstyle rule to help developers. ## How was this patch tested? ``` ./dev/lint-java ./build/sbt compile ``` Author: Dongjoon Hyun <dongjoon@apache.org> Closes #11438 from dongjoon-hyun/SPARK-13583.		2016-03-03 10:12:32 +00:00
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src	[SPARK-13583][CORE][STREAMING] Remove unused imports and add checkstyle rule	2016-03-03 10:12:32 +00:00
pom.xml	[SPARK-6363][BUILD] Make Scala 2.11 the default Scala version	2016-01-30 00:20:28 -08:00