Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/8385#discussion_r40016703
--- Diff: docs/running-on-yarn.md ---
@@ -16,37 +16,54 @@ containers used by the application use the same
configuration. If the configurat
Java system properties or environment variables not managed by YARN, they
should also be set in the
Spark application's configuration (driver, executors, and the AM when
running in client mode).
-There are two deploy modes that can be used to launch Spark applications
on YARN. In `yarn-cluster` mode, the Spark driver runs inside an application
master process which is managed by YARN on the cluster, and the client can go
away after initiating the application. In `yarn-client` mode, the driver runs
in the client process, and the application master is only used for requesting
resources from YARN.
+There are two deploy modes that can be used to launch Spark applications
on YARN. In `cluster` mode, the Spark driver runs inside an application master
process which is managed by YARN on the cluster, and the client can go away
after initiating the application. In `client` mode, the driver runs in the
client process, and the application master is only used for requesting
resources from YARN.
-Unlike in Spark standalone and Mesos mode, in which the master's address
is specified in the `--master` parameter, in YARN mode the ResourceManager's
address is picked up from the Hadoop configuration. Thus, the `--master`
parameter is `yarn-client` or `yarn-cluster`.
-To launch a Spark application in `yarn-cluster` mode:
+Unlike in Spark standalone and Mesos mode, in which the master's address
is specified in the `--master` parameter, in YARN mode the ResourceManager's
address is picked up from the Hadoop configuration. Thus, the `--master`
parameter is `yarn` and to specify the deployment `--deploy-mode` can be either
`client` or `cluster`.
--- End diff --
This might need different wording: "... and `--deploy-mode` can be `client`
or `cluster` to select the YARN deployment mode" ?
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