Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/856#discussion_r12977642
--- Diff: docs/configuration.md ---
@@ -750,12 +779,95 @@ The following variables can be set in `spark-env.sh`:
</tr>
</table>
-In addition to the above, there are also options for setting up the Spark
[standalone cluster scripts](spark-standalone.html#cluster-launch-scripts),
such as number of cores to use on each machine and maximum memory.
+In addition to the above, there are also options for setting up the Spark
[standalone cluster
+scripts](spark-standalone.html#cluster-launch-scripts), such as number of
cores to use on each
+machine and maximum memory.
-Since `spark-env.sh` is a shell script, some of these can be set
programmatically -- for example, you might
-compute `SPARK_LOCAL_IP` by looking up the IP of a specific network
interface.
+Since `spark-env.sh` is a shell script, some of these can be set
programmatically -- for example,
+you might compute `SPARK_LOCAL_IP` by looking up the IP of a specific
network interface.
# Configuring Logging
-Spark uses [log4j](http://logging.apache.org/log4j/) for logging. You can
configure it by adding a `log4j.properties`
-file in the `conf` directory. One way to start is to copy the existing
`log4j.properties.template` located there.
+Spark uses [log4j](http://logging.apache.org/log4j/) for logging. You can
configure it by adding a
+`log4j.properties` file in the `conf` directory. One way to start is to
copy the existing
+`log4j.properties.template` located there.
+
+# Configuring ports for network security
--- End diff --
Capitalize the title to be consistent with the rest of the file
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