Github user HilmiYildirim commented on the pull request:
https://github.com/apache/flink/pull/695#issuecomment-105415577
The problem is as follows. While I was working on the commit, the interface
SourceFunction has changed and was merged with the master. Now, it has the
methods reachedEnd and next. Cause TwitterSource inherits from SourceFunction,
the nextReachedEnd and next methods were implemented in the class. The problem
os that the implementation has bugs and the old methods are not deleted which
leads to that the class also has dead code. Therefore, the TwitterFilterSource
class was not working and, therefore, TwitterFilterSource was also not working.
Therefore, I have fixed the class TwitterSource and removed the old code. Now,
it is working properly.
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