Github user zentol commented on a diff in the pull request:
https://github.com/apache/flink/pull/5045#discussion_r152528590
--- Diff: docs/concepts/runtime.md ---
@@ -28,10 +28,10 @@ under the License.
## Tasks and Operator Chains
-For distributed execution, Flink *chains* operator subtasks together into
*tasks*. Each task is executed by one thread.
-Chaining operators together into tasks is a useful optimization: it
reduces the overhead of thread-to-thread
+For distributed execution, Flink *chains* operator subtasks together into
*tasks*. One thread executes each task.
--- End diff --
hmm....i kind of prefer the old version.
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