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From Timo Walther <fl...@twalthr.com>
Subject Flink Java 8 Lambdas will work again with future Eclipse compilers
Date Wed, 12 Nov 2014 17:43:57 GMT
Hi all,

as some of you may already know, Flink's Java 8 Lambdas currently only 
worked if the job has been compiled with the Eclipse JDT 4.4 compiler 
because this compiler saves important type information in the class files.
Unfortunately, this feature was not officially supported by the Eclipse 
team, which is why it has been remove as part of another bugfix in 
version 4.4.1.
After I had contact with the guys of the Eclipse JDT team, they created 
a patch to re-introduce the functionality with a compiler option (see 
So we won't have problems with the Eclipse JDT compiler in future 
releases :-)

I'm also working on a patch for the javac compiler. I will submit it 
after I have finished my current task with the type hints.


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