Github user mxm commented on the pull request:
https://github.com/apache/flink/pull/926#issuecomment-125955678
Sorry for the plain description. This pull request adds a test for the
streaming part of the live accumulators, i.e. it makes sure that user-defined
and Flink internal accumulators work also in streaming programs. The current
test only tests the batch side.
The stability of the live accumulator tests should not be affected by this
pull request. It uses the same technique as the current (improved) live
accumulator tests.
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