apache/incubator-flink — pull request #212 by StephanEwen (2014-11-18 13:33:54+00:00)
Title: [FLINK-1209] & [FLINK-1250] Fixes for error messages and config keys

[FLINK-1209] Improve error messages when forgetting to close an iteration
[FLINK-1250] Correct and document config keys for heartbeat intervals and timeouts