Github user uce commented on a diff in the pull request:
https://github.com/apache/incubator-flink/pull/246#discussion_r21105935
--- Diff: docs/config.md ---
@@ -36,26 +39,29 @@ master/coordinator of the distributed system (DEFAULT:
localhost).
- `jobmanager.rpc.port`: The port number of the JobManager (DEFAULT: 6123).
- `jobmanager.heap.mb`: JVM heap size (in megabytes) for the JobManager
-(DEFAULT: 256).
+(DEFAULT: 256). You may have to increase the heap size for the JobManager
if you are running
+very large applications (with may operators), or if you are keeping a long
history of them.
- `taskmanager.heap.mb`: JVM heap size (in megabytes) for the TaskManagers,
which are the parallel workers of the system. In
contrast to Hadoop, Flink runs operators (e.g., join, aggregate) and
user-defined functions (e.g., Map, Reduce, CoGroup) inside the TaskManager
(including sorting/hashing/caching), so this value should be as
-large as possible (DEFAULT: 512). On YARN setups, this value is
automatically
-configured to the size of the TaskManager's YARN container, minus a
-certain tolerance value.
+large as possible (DEFAULT: 512). If the cluster is exclusively running
Flink,
--- End diff --
see comment for JM config
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