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FLINK-2747 TypeExtractor does not correctly analyze Scala Immutables, Solution: NONE
FLINK-2236 RowSerializer and CaseClassComparator are not in sync regarding Null-Values, Solution: revert f8e12b20d925c3f6f24769327d1da5d98affa679 on master OR fix
FLINK-2066 Make delay between execution retries configurable, Solution: Pending pull request (#1223)
CRITICAL
FLINK-2674 Rework windowing logic,
FLINK-2491 Operators are not participating in state checkpointing in some cases
MAJOR
FLINK-1610 Java Docs do not build, Solution: PR pending (#1225)
ALL OPEN ISSUES
BLOCKER
FLINK-2747 TypeExtractor does not correctly analyze Scala Immutables (AnyVal)
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