Github user uce commented on a diff in the pull request:
https://github.com/apache/incubator-flink/pull/246#discussion_r21106125
--- Diff: docs/config.md ---
@@ -266,3 +272,79 @@ So if `yarn.am.rpc.port` is configured to `10245` and
the session's application
- `yarn.am.rpc.port`: The port that is being opened by the Application
Master (AM) to
let the YARN client connect for an RPC serice. (DEFAULT: Port 10245)
+
+
+## Background
+
+### Configuring the Network Buffers
+
+Network buffers are a critical resource for the communication layers. They
are
+used to buffer records before transmission over a network, and to buffer
+incoming data before dissecting it into records and handing them to the
+application. A sufficient number of network buffers are critical to
achieve a
+good throughput.
+
+In general, configure the task manager to have so many buffers that each
logical
--- End diff --
so many => enough
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